298 BATRACHIA CAUDATA. 
Synopsis of the Central-American Species. 
I. Body moderately elongate, with well-developed limbs. 
A. Digits free or with a short web. 
1. chiropterus ; 2. gibbicaudus ; 3. cephalicus; 4. bellit; 5. leprosus. 
B. Digits half-webbed. 
6. bocourti; 7. subpalmatus. 
C. Digits broadly webbed, only the last phalanx of the middle digits projecting. 
8. morio; 9. robustus. 
D. Digits completely enclosed in the web. 
10. variegatus ; 11. lignicolor; 12. rufescens ; 13. yucatanus. 
II. Body and tail worm-shaped, with very weak limbs. 
14. lineolus; 15. uniformis. 
1. Spelerpes chiropterus. 
Spelerpes chirupterus, Cope, Proc. Ac. N. Sc. Philad. 1868, p. 54; 1869, pp. 105, 106; Bouleng. 
Batr. Grad. p. 67. 
Spelerpes orculus, Cope, Proc. Ac. N. Sc. Philad. 1865, p. 196; 1866, p. 182. 
Hab. Mexico, Cuernavaca (Dugés), Mirador near Vera Cruz (Sartorius), Orizaba, 
alpine zone (Sumichrast), Jalapa (Godman). 
Body moderately elongate, with 11 (or 12) costal grooves *, which extend across the 
back and abdomen; limbs moderately developed, with short free digits; the inner 
finger and toe rudimentary, dilated into a short lobe. ‘Tail cylindrical, slightly longer 
than trunk. Series of palatine teeth arched, not extending outwards beyond the 
choanee, separated from the parasphenoid groups which are not confluent. Brown 
above, with or without a yellowish band; lighter below; sometimes uniform black. 
Total length 80 millim., the tail measuring 48 millim. 
2. Spelerpes gibbicaudus. 
Spelerpes gibbicaudus, Blatchley, Proc. U. S. Nat. Mus, xvi. p. 388 (1898). 
Hab. Mexico, Orizaba (Sumichrast). 
Body rather slender, with 12 costal grooves, measuring over three and a half times 
the distance from snout to gular fold. Head narrow. Tail cylindrical. Digits 
short, free. Series of palatine teeth straight, extending outwards beyond the choane ; 
parasphenoid teeth in two bands diverging but slightly posteriorly. Uniform brown, 
dusted with yellow. (After Blatchley.) 
Totallength . . . ..... .. =. . . . . 85 millim. 
Head to gularfold . . . . ... . . ew 10 = 
Length of tal. 2. 2. 2. 2 1 ww ee ee ww. 89 
29 
* 13 according to Cope’s original description, in which the inguinal fold seems to have been included in the 
number ; but in his later notes the number is stated to be 11. 
