17. SPELERPES. 71 



of snout to gular fold. Limbs weak, not meeting when adpressed; 

 fingers and toes very short and broad, truncate, webbed, the tips 

 free ; no carpal or tarsal tubercles. Tail cylindrical, shorter than 

 head and body. Skin smooth ; no parotoids ; gular fold strong ; 

 twelve costal grooves. Black or dark brown, with pale specks 

 which may form series on the back. 



Dimensions given by Peters : — 



Total length 79 millim. 



From snout to claoca 42 „ 



Head 9 „ 



Width of head 7 



Fore limb 10 „ 



Hind limb 10£ „ 



Tail 37 



Colombia. 

 a-b. Adult, not good state. Bogota. Prof. Peters [P.]. 



15. Spelerpes rufescens. 



Oedipus rufescens, Cope, JVoc. Ac. Philad. 1869, p. 104. 



Spelerpes (Oedipus) lignicolor, Peters, Mon. Bed. Ac, 1873, p. 617. 



Dentition as in S. adspersus. Head small, longer than broad ; 

 snout truncate, without canthus rostralis ; eye moderate. Body 

 short, measuring not quite three times the distance from tip of snout 

 to gular fold. Limbs weak, not meeting when adpressed ; fingers 

 and toes entirely united ; no carpal or tarsal tubercles. Tail 

 cylindrical, shorter than head and body. Skin smooth ; no parotoids ; 

 a distinct gular fold ; twelve costal grooves. Brown, white-speckled 

 beneath ; a triangular darker marking on the nape. 



Total length 52 millim. 



From snout to cloaca 30 



Head 



Width of head 

 Fore limb 

 Hind limb 

 Tail 



7 

 5 



9 

 22 



Mexico, Vera Cruz ; Chiriqui. 

 a. Hot. — 



16. Spelerpes altamazonicus. 



Oedipus altamazonicus, Cope, Proc. Ac. Philad. 1874, p. 120. 



Palatine teeth in two short arches meeting in the middle, not 

 extending outwards beyond choanae, separated from the parasphenoid 

 teeth ; latter forming a single patch anteriorly. Head an elongate 

 oval ; end of snout tumid, notched in the middle. Body elongate. 



