SPELERPES, o01 
compressed. Limbs moderately developed ; digits half-webbed. The series of palatine 
teeth does not extend outwards beyond the choane; parasphenoid teeth confluent 
into a single group. Greyish; back pinkish, marbled with grey. 
Totallength . 2... . . . . 2... . . 119 millim. 
Lengthoftal. 2... 2... 0 =, 
These characters are taken from the largest of the specimens for which the species 
has been established, as I do not feel sure that all the young individuals associated 
with the larger one should be referred to it. 
8. Spelerpes morio. 
Geotriton carbonarius, Cope, Proc. Ac. N. Sc. Philad. 1868, p. 313. 
(Edipus morio, Cope, |. c. 1869, p. 103; Journ. Ac. N. Sc. Philad. viii. p. 96 (1876) ; Proc. Am. 
Phil. Soc. xviii. p. 271 (1879). 
Spelerpes morio, Bouleng. Batr. Grad. p. 70; Brocchi, Miss. Sc. Mex., Batr. p. 113. 
Hab. Mexico, Jalapa (Hége), Tlalpam (Dugés); Guatemata (Van Patten); Costa Rica, 
plateau of Cartago (Zeledon). | 
Body moderately elongate, with 12 or 13 costal grooves; head longer than wide; 
limbs rather weak; digits very short, connected by a broad membrane which leaves 
free the last phalanx only. Tail cylindrical. Series of palatine teeth slightly arched, 
extending outwards beyond the choane, separated from the parasphenoid groups, which 
are in contact with each other for the greater part of their length. Black, lower parts 
and sides with indistinct whitish specks. 
Totallength . . 2... ew we eee ee 97 milli. 
Length of tail. 2. 2. 2. 2... wwe eee A, 
9. Spelerpes robustus. 
Cdipus robustus, Cope, Proc. Ac. N. Sc. Philad. 1894, p. 194. 
Hab. Costa Rica, slopes of the Volcan de Irazu (Cooper). 
Body robust, with 12 costal folds; length of the head to gular fold two-ninths of 
that of the head and body. Tail cylindrical, the extremity moderately compressed. 
Digits broadly webbed, the last phalanx, however, being free, except that of the inner 
digits which is entirely enclosed. Series of palatine teeth straight, extending outwards 
beyond the choane; parasphenoid group not divided anteriorly. Uniform plumbeous. 
(After Cope.) 
Total length . 2. 2. 2. 1 ww... ee 206 millim. 
Head and body . ......... 4. . 6 +. 98 ,, 
Length to gularfold . . . . 2. 1... ww we 22g, 
oftail. . . . woe ew ee ele le «108 C=", 
3» 
BIOL. CENTR.-AMER., Batr., January 1902. *39 
