90 



Messrs. J. C. Melvill and J. H. Ponsonby on 



Cerberus rhyncbops 



Naia tripudiana , 



Adeniophis bilineatus . . . , 



Amblycephalus boa , 



Trimeresurus formosus. . . , 



■ subannulatua , 



Oxygloasus be vis , 



Rana macrodon 



palavaneusia 



varians 



glartdulosa 



Staui'ois natator 



Rhacopborua leucomystax 



macrotia 



Everetti 



Ixalus longicrua. . . ; 



Jiufo pbilippinicua 



Leptobracbium Hasseltii . 

 Megalopbrys montana . . . 



3. 



4. 



XV. — Descriptions of Fifteen new Species of South- African 

 Terrestrial Mollusca. By James COSMO Melvill, M.A., 

 F.L.S., and John Heney Ponsonby, F.Z.S. 



[Plate I.] 



Since our last communication * a fair amount of additional 

 material has been kindly forwarded by various correspondents, 

 and one or two more species from tlve rich stores of Mr. E. L. 

 Layard. 



1. Nanina morrumbalensis, sp. n. (PI. I. fig. 1.) 



N. testa olivaceo-cornea, pertenui, planulata, obtecte et augustissirne 

 umbilicata, par urn nitente ; anfractibus quinque, undique irregu- 

 lariter longitudinaliter rugoso-striatis, ultimo rapide accres- 

 cente, spira conico-depressa ; apertura ampla, ovato-lunari ; 

 peristomate pertenui, simplici, apud umbilicum paullurn reflexo. 



Long. *75, lat. 1*30 unc. 



Bab. Mount Morrumbala, Central East Africa [E. L. 

 Layard) . 



A large, somewhat transparent, horny shell, but little 

 shining, throughout longitudinally striately wrinkled, the 

 * Aim. & Mag. Nat. Hist. ser. 6, vol. xii. pp. 103 et sqq. 



