2 University of Michigan 



Maxillary teeth none. Diapophyses of sacral vertebra not 

 dilated. Tympanum concealed. Pupil horizontal. Tongue 

 elongate, entire and free behind. Fingers and toes entirely 

 free; terminal phalanges simple; toes four, occasionally a 

 projecting rudiment of a hallux, the tips not or but little 

 dilated, flattened into pointed disc-like structures. 



Type: Gcobatrachus z^'alkcri, new species. 



Geobatrachus walkeri, new species.^ 



Description: Head short and broad; snout a little longer 

 than the diameter of the eye, with angular canthus rostralis, 

 upper surface flat or a little concave, loreal region oblique. 

 Interorbital space broader than upper eyelid. Tympanum con- 

 cealed. Fingers and toes short and stout; the first finger not 

 extending as far as the second ; tips of fingers and toes flat- 

 tened, and sometimes a little enlarged, into pointed disc-like 

 structures ; a more or less distinct outer metatarsal tubercle. 

 The hind limb being extended along the side @^ the tibio-tarsal 

 articulation reaches the shoulder or falls short of that point. 

 Skin above smooth or with low warts which are mostly con- 

 fined to the lumbar region and sides, a fold from the eye to 

 the insertion of the fore limb; belly coarsely granular. Uni- 

 form olivaceous black (3) above; ground color below dull 

 white, this color more or less replaced by brown dots ; chin 

 and throat darker. 



Total length (head and body) of the type specimen, 19 

 mm., length of hind limb (to tip of longest toe), 25.5 mm. 



Habitat : Santa Marta Mountains, Colombia. 



Type specimen : Cat. No. 47785, Museum of Zoolog}', 

 T/niversity of Michigan; San Lorenzo (altitude of 8,000 feet), 



' Named frr Di. IJryant Walker, the conchologist. 



