North American Recent Soft-shelled Turtles (Family Trionychidae) Part 41

_Trionyx spinifer guadalupensis_, new subspecies, dorsal views.

_Top_--Juveniles; left, ANSP 16717 ( 1), no data; right, KU 50834 ( 1-1/10), Hondo Creek, 4 mi. W Bandera, Bandera County, Texas.

_Bottom_--Adult males; left, holotype UMMZ 89926 ( 1/3), 15 mi.

NE Tilden, McMullen County, Texas; right, SM 659 ( 3/10), Colorado River, near Austin, Travis County, Texas.]

[Ill.u.s.tration: PLATE 42

_Trionyx spinifer guadalupensis_, new subspecies, dorsal views.

_Top_--Adult females; left, TU 16036.1 ( 1/5), Llano River, 2 mi. W Llano, Llano County, Texas; right, TU 10160 ( 1/5), Guadalupe River, 9 mi. SE Kerrville, Kerr County, Texas.

_Bottom_--Left, female, CM 3118 ( 3/4), Black Bayou, Victoria County, Texas; right, male, TU 14419.6 ( 5/9), San Saba River, 11 mi. NNW San Saba, San Saba County, Texas.]

[Ill.u.s.tration: PLATE 43

_Trionyx spinifer emoryi_, dorsal views.

_Top_--Juveniles; left, UMMZ 69411 ( 3/4), Rio Conchos, 9 mi.

N Linares, Nuevo Leon, Mexico; right, UMMZ 69412 ( 5/6), Rio Purificacion, north Ciudad Victoria, Tamaulipas, Mexico.

_Bottom_--Adult males; left, topotype, TU 11561 ( 1/3), Brownsville, Cameron County, Texas; right, KU 48217 ( 1/3), Black River Village, Eddy County, New Mexico.]

[Ill.u.s.tration: PLATE 44

_Trionyx spinifer emoryi_, dorsal views. _Top_--Left, adult male, KU 51194 ( 2/7), Rio Conchos, near Meoqui, Chihuahua, Mexico; right, female, KU 3119 ( 4/9), Salt River, Phoenix, Maricopa County, Arizona.

_Bottom_--Females; left, KU 3118 ( 1/5), locality same as KU 3119; right, TU 14453 ( 3/10), Pecos River, near junction with Independence Creek, Terrell County, Texas.]

[Ill.u.s.tration: PLATE 45

_Trionyx muticus muticus_, juveniles, dorsal views.

_Top_--Topotypes ( 1), Wabash River, 2 mi. S New Harmony, Posey County, Indiana; left, INHS 7278; right, INHS 7279.

_Bottom_--Left, TU 14375 ( 3/4), Trinity River near junction with Big Creek, Liberty County, Texas; right, KU 50845 ( 1-2/5), 4 mi. N Atwood, Hughes County, Oklahoma.]

[Ill.u.s.tration: PLATE 46

_Trionyx muticus muticus_, dorsal views.

_Top_--Adult males; left, TU 14606 ( 3/10), White River, Cotter, Marion County, Arkansas; right, KU 48237 ( 1/3), 8 mi. S Hanover, Was.h.i.+ngton County, Kansas.

_Bottom_--Females ( 1/4), 2 mi. E Manhattan, in Pottawatomie County, Kansas; left, KU 48229; right, KU 48238.]

[Ill.u.s.tration: PLATE 47

_Trionyx muticus calvatus_, dorsal views.

_Top_--Juvenile, TU 17303 ( 1-2/5), Pearl River, Varnado, Was.h.i.+ngton Parish, Louisiana.

_Bottom_--Left, adult male, KU 47118 ( 3/10), Pearl River within 4 mi. of Monticello, Lawrence County, Mississippi; right, adult female, TU 17306 ( 2/9), Pearl River, 9 mi. S Monticello, Lawrence County, Mississippi.]

[Ill.u.s.tration: PLATE 48

FIG. 1. Habitat of _T. s. pallidus_, Little River, 6.5 mi. S Broken Bow, McCurtain County, Oklahoma, September 7, 1953.

FIG. 2. Habitat of _T. s. emoryi_, Rio Mesquites, 2 mi. W Nadadores, Coahuila, Mexico, July 27, 1959. Two _emoryi_ were trapped in hoop nets set in quiet water to left of what is believed to be a muskrat house.]

[Ill.u.s.tration: PLATE 49

FIG. 1. General habitat of _T. s. pallidus_ and _T. m. muticus_, Lake Texoma, in a period of low water, 2 mi. E Willis, Marshall County, Oklahoma, February 24, 1951.

FIG. 2. Type locality of _T. ater_, Tio Candido, 16 km. S Cuatro Cienegas, Coahuila, Mexico, July 30, 1959. An adult male of _T. s. emoryi_ was also netted here.]

[Ill.u.s.tration: PLATE 50

FIG. 1. General habitat of _T. s. asper_ and _T. m. calvatus_, Escambia River, 2 mi. E, 1/2 mi. N Century, Escambia County, Florida, June 1, 1954. Three nests of _calvatus_ found on sand bar in foreground.]

FIG. 2. Nest site of _T. m. calvatus_ (excavated by investigator) on open sand bar shown above in Fig. 1, June 1, 1954. Note tracks of turtle in foreground leading toward and away from disturbed area at left.

[Ill.u.s.tration: PLATE 51

FIG. 1. Eggs of _T. m. calvatus in situ_, June 1, 1954, approximately six inches below surface, from nest shown in Fig. 2, Pl. 50. Note sandy substrate and seemingly irregular arrangement of eggs.

FIG. 2. Eggs of _T. m. calvatus in situ_, June 1, 1954; nest located at brim of incline shown in foreground of Fig. 1, Pl. 50. Note gravelly substrate (in foreground) and symmetrical arrangement of eggs.]

[Ill.u.s.tration: PLATE 52

Lectotype of _Trionyx spinifer_ Lesueur, Museum d'Histoire Naturelle, Paris, No. 8808 ( 1/5); obtained by C. A. Lesueur from the Wabash River, New Harmony, Posey County, Indiana.

_Top_--Dorsal view. _Bottom_--Ventral view.]

[Ill.u.s.tration: PLATE 53

Lectotype of _Trionyx muticus_ Lesueur, Museum d'Histoire Naturelle, Paris, No. 8813 ( 1/2); obtained by C. A. Lesueur from the Wabash River, New Harmony, Posey County, Indiana.

_Top_--Dorsal view.

_Bottom_--Ventral view.]

[Ill.u.s.tration: PLATE 54

Skull of holotype of _Platypeltis aga.s.sizi_ Baur (= _T. s. asper_), MCZ 37172 ( 1), Savannah River, Georgia.

_Top_--Dorsal view.

_Bottom_--Ventral view.]

28-7818

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* An asterisk designates those numbers of which the Museum's supply (not the Library's supply) is exhausted. Numbers published to date, in this series, are as follows:

Vol. 1. Nos. 1-26 and index. Pp. 1-638, 1946-1950.

*Vol. 2. (Complete) Mammals of Was.h.i.+ngton. By Walter W. Dalquest. Pp. 1-444, 140 figures in text. April 9, 1948.

Vol. 3. *1. The avifauna of Micronesia, its origin, evolution, and distribution. By Rollin H. Baker. Pp. 1-359, 16 figures in text. June 12, 1951.