1. CINOSTERNUM. 43 
Jaws strong; beak feebly hooked. Carapace unicarinate, the 
keel disappearing in old specimens; marginals often much swollen. 
Plastron completely closing the box, not emarginate posteriorly ; 
lobes well movable in the adult, front one longer than the fixed 
portion; gular shieid not more than half the length of the front 
plastral lobe, usually less ; suture between the pectoral shields much 
shorter than that between the brachials; axillary and inguinal 
shields separated or narrowly in contact. Tail ending in a claw- 
like horny scute. Carapace brown, plastron yellowish or brownish, 
sutures dark brown or black; head dark brown above and on the 
sides ; snout and two longitudinal temporal bands spotted or vermi- 
culated with yellowish ; jaws uniform yellowish or horny brown in 
the female, with fine brown lines in the male. 
Length of skull 143 centim. 
Central America ; Colombia. 
a. 2, spir. Cosamaloapam, Mexico. M. Sallé [C.]. (Type of 
Swanka maculata.) 
b. 3, skel. Cosamaloapam, Mexico. M. Sallé {C.]. 
c. Her., spir. Playa Vicente, Mexico. M.Sallé[C.]. (Type of C. 
brevigulare.) 
de Ovrspir: Huamuchal, Guatemala. O. Salvin, Esq. [C.]. 
e. Yg., spir. Coban, Vera Paz. O. Salvin, Esq. [C.] (Types of 
C. coba- 
f. Yg., spir. | Cahabon, Vera Paz. F.C.Sarg,Esq.{C.]. } mum.) 
g-h. 2, spir. Vera Paz. O. Salvin, Esq. [C.]. (Types 
of Swanka maculata.) 
te Or ystiide C. America. 
k,l,m 39, —?P 
shells. 
m, 3, skel. ——? 
10. Cinosternum berendtianum. 
Cinosternum berendtianum, Cope, Proc. Ac. Philad. 1865, p. 189; 
Bocourt, Journ. de Zool. v. p. 895 (1876). 
Swanka maculata, part., Gray, Suppl. Cat. Sh. Rept. i. p. 68 (1870). 
Cinosternum effeldtii, Peters, Mon. Berl. Ac. 1873, p. 603, pl. —; 
Bocourt, lc. p. 896; Giinth. Biol. C.--Am., Rept. p. 16 (1885). 
leucostomum, part., Giinth, l. c. p. 17, pl. xvi. 
Snout longer than in C. lewcostomum; beak strongly hooked in the 
male. Carapace unicarinate. Plastron completely closing the box, 
not emarginate posteriorly ; lobes well movable, front one not 
longer than the fixed portion; gular shield more than half the 
length of the front plastral lobe ; suture between the pectoral shields 
shorter than that between the humerals; axillary and inguinal 
shields separated or narrowly in contact. Tail ending in a claw-like 
horny scute. Carapace brown; plastron yellowish or brown, sutures 
dark brown; upper surface of head dotted with brown; jaws spotted 
or streaked with brown. 
Length of shell 103 centim. 
Central America. 
