132 bulletin: museum op comparative zoology. 



Description. Vomerine teeth in two small rounded groups between 

 and very slightly posterior to the choanae. Head large, as long as 

 broad; snout slightly longer than the orbit, with rounded profile; 

 canthus rostralis not especially well developed; loreal region very 

 slightly concave; nostril much nearer tip of snout than eye; eye 

 large and prominent; interorbital space broader than upper eyelid; 

 tympanum not one half the diameter of the eye. Limbs slender; 

 tips of fingers and toes conspicuously dilated into discs; first finger 

 a little shorter than second; toes about one third webbed; subarticu- 

 lar tubercles strong; a conspicuous inner metatarsal tubercle. The 

 tibiotarsal articulation reaches the tip of the snout. Upper parts 

 smooth, lower parts strongly granular. Uniform slate color above, 

 dirty white below. Very faint darker cross bars on the limbs. 



Nyctibates corrugatus Boulenger. 



A fine adult in the Schwab collection. This example differs con- 

 siderably from the original description. The dorsal asperities are 

 abundantly developed but scattered quite irregularly. They show 

 no tendency to form chevron-like series. There is no triangular 

 dark marking with light colored margin situated between the eyes. 

 The lips are not wholly white but are marked with dusky broad, 

 vertical bars. The inner side of the leg is not black but rather dusky 

 brown with very many white spots. The specimen is unusually well 

 preserved and as it was among the lot collected in 1910, I do not 

 suppose that it has faded very much, if any. 



Chiromantis rufescens Gunther. 

 Two examples in the Schwab collection. 



Phrynobatrachus plicatus Gunther. 



Two specimens from Bitye, on the Ja River, Cameroons, Barbour 

 collection, and two from Efulen, Schwab collection. 



Petropedates newtonii Bocage. 



A single adult male, with prominent tympanic stalks. Another 

 male with less prominent stalks, and a female, from the Schwab 

 collection. 



