KU) G. A. BOULENGER 



40. Megalixalus fornasinii, Bianc. 

 Cameroon: Buea. 



Fernando Po: Punta Frailes , Bahia de S. Carlos, 200 m. , 

 Musola, 500-700 m. 



French Congo: Fernand-A^az, Lambarene. 



This species varies enormously in its markings. Although not 

 exceeding a length of 35 millim. when full-grown , young speci- 

 mens with remains of the larval tail measure 20 millim. from 

 snout to vent. 



41. Megalixalus immaculatus, Blgr. 

 French Congo: Fernand-Vaz. 



42. Hylambates bocagii, Gthr. 

 Portuguese Guinea: Bolama. 



The careful comparison of a large series of specimens from 

 Angola, Portuguese Guinea, Abyssinia (Lake Tsana) and Shoa , 

 among which examples received from Prof. Barboza du Bocage 

 under the names of Hylambates angolensis and H. cinnamo- 

 meus, has resulted in the allocation of these names, as w^ell as 

 of that of H. viridis , Gthr. , to the synonymy of H. bocagii, 

 the characters by wdiich these supposed species have been defined 

 as distinct from one another being, in my opinion, due to indivi- 

 dual variations. The specimens collected by L. Fea are small, but 

 on the other hand others obtained at Zegi , on Lake Tsana , by 

 Mr. E. Degen, are identical in size and markings with the Angola 

 specimens on which Barboza du Bocage founded his H. angolensis. 

 H. margi7iatus, which is only known to me from the description, 

 appears to differ in the longer toes (foot more than half the 

 length of head and body). 



Advanced tadpoles which I refer to this species, the hind limbs 

 being well developed, have a long, finely attenuate tail with high 

 crests shaped as in our Hyla arborea, but the dorsal crest not 

 extending on the body. The spiraculum is on the left side, the 

 anal opening on the right. Beak normal, black-edged; papillose 



edge of the lip broadly interrupted 

 above by the outer row of labial teeth ; 

 these are disposed in series; in the 

 upper lip the second series is narrowly 

 interrupted in the middle, the following 

 are strictly lateral and gradually nar- 



