Tailless Batrachians in the British Museum. 181 



line on tliecantlius rostralis; loveal and temporal regions black; 

 a white streak, formed of numerous small spots, from below the 

 eye to the fore limb, and prolonged on the upper surface of 

 the latter to a little beyond the elbow ; throat blackish, breast 

 and limbs dark brown dotted with white, belly and lower 

 surface of thighs brownish white. 



From snout to vent 36 ram. 



A single specimen from Fernando Po, collected by Mr. E. 

 Seimund during the expedition carried out under the auspices 

 of the Duke of Bedford, the Hon. Walter Rothschild, and 

 Mrs. Percy Sladen. 



This species is intermediate between A. macrodactyluSy 



Atelopus tumifrons. 



Habit stout, toad-like. Head a little broader than long ; 

 snout very short, not projecting beyond the mouth, above 

 with a strong rounded swelling extending to between the 

 eyes ; interorbital space nearly twice as broad as the upper 

 eyelid. Fingers moderate, with a slight rudiment of web, 

 first a little shorter than second ; toes short, barely half- 

 webbed ; subarticular tubercles distinct, some double ; two 

 small metatarsal tubercles. The tibio-tarsal articulation 

 reaches the shoulder. Skin warty, spinulose; the largest 

 warts, at the angles of the mouth and around the vent, conical. 

 Blackish ; sides of snout, tips of digits, lower surface of hands 

 and feet and of arms, three spots on the chin and throat, and 

 a large blotch covering the lower belly and the lower side of 

 the thighs yellow. 



From snout to vent 29 mm. 



A single female specimen from Pernambuco, presented by 

 Dr. F. Werner. 



Closely related to A. Stelznerij Weyenb. 



OOCORMUS, gen. nov. Cistignathidarum. 



Pupil horizontal. Tongue circular, entire, free behind. 

 Vomerine teeth in a long transverse series behind the choana3. 

 Tympanum hidden under the skin. Fingers and toes free, 

 the tips not dilated. Outer metatarsals bound together. 

 Sternum without bony style. Habit stout, Engystoma-WkQ. 



Oocormus microps. 



Vomerine teeth forming a very open chevron, which is 

 scarcely interrupted in the middle and the branches of which 



