liatrachians from South Cameron. iU'J 



A rth rohptis corn utus. 



Ton(;ne willi a conical median papilla. Head moderate, as 

 liMig as broad ; snout roumied, not quite as lung as the eye, 

 with obtuse canthus and concave loreal region; nostril a little 

 nearer the tip ot the .snout than the eye ; intcrorbital space 

 narrower than the up|)er eyelid ; tympanum hiddcri. Fingers 

 rather short, fir.st and second equal ; toes with a short but 

 very distinct basal web ; tips of tingers and toes dilated into 

 small disks ; subarticular tubercles small but very prominent ; 

 two small but very prominent metatarsal tubercles, inner 

 oval, outer round ; a small rounded tubercle on the inner side 

 of the tarsus, connected with the inner metatarsal tubercle by 

 a narrow dermal ridge ; the distance between the two meta- 

 tarsal tubercles nearly equals the distance between the inner 

 and the tarsal tubercle. The tibio-tarsal articulation reaches 

 the eye. Skin of upper parts with prominent warts of 

 unequal size ; a conical or spine-like tubercle on the posterior 

 part of the upper eyelid. Grey above, with darker spots, 

 and more or less distinct cross-bars on the limbs; alight 

 vertebral stripe may be present ; hinder side of thighs with a 

 more or less distinct whitish dark-ed^ed stripe; lips and 

 lower parts white, with large roundish black spots. 



From snout to vent 20 mm. 



Two specimens from Zima. 



Closely allied to A. calcaratua, Peters ; distinguished by 

 the stouter form and shorter hind limbs and by the lesser 

 distance between the inner metatarsal tubercle and the tarsal. 



Arthroleptis twniatus. 



Tongue with a conical median papilla. Head moderate, 

 as long as broad ; snout rounded, as long as the eye, with 

 distinct canthus and nearly vertical loreal region ; nostril 

 equally distant from the eye and from the end of the snout ; 

 intcrorbital s{)ace broader than the Ujjper eyelid ; tym|)anuiu 

 very distinct, two lifths the diameter of the eye. Fingers 

 very unequal in length, first and fourth much shorter than 

 second, which is barely half the length of third (^ina/e), the 

 tips dilated into small but very distinct disks; toes slender, 

 nearly free, with a very slight rudiment of web, the tips 

 dilated into rather large disks ; subarticular tut^ereles small 

 and moderately prominent; a small, oval, inner metatarsal 

 tubercle, measuring about half the length of the inner toe. 

 The tibio-tarsal articulation reaches between the eye and the 

 ti[» of the snout. Skin smooth. Olive-brown above, with a 



22* 



