LEPIDOPTERA HETEROCERA. 525 



Male. White, extremely slender. Palpi brown on the outer 

 side. Sides of the thorax brown in front. Abdomen extending 

 far beyond the hind winjjs; apical tuft white. Legs very slender; 

 fore femora and fore tibiae brown above. Wings very narrow. 

 Fore wings very acute, hardly falcate, with a brown stripe along 

 the costa, which is white exteriorly. Length of the body 6 lines ; 

 of the wings 12 lines. 



a, b. Venezuela. From Mr, Dyson's collection. 



This species recedes very far from the typical form of the genus. 



Africa. 



A. Alae alba?. transvisalis, Guen. 



B. Alae albo-virides. ----- Politulalis, Cram. 



C. Alas virides. 



A. Tibiae posticae non cristatae. 



a. Abdomen maris fasciculo apicali nigro. 



a. Tibiae anticae albo non fasciatae. - sericeolalis, Drury. 



b. Tibiae anticae albo fasciatae. - Arachnealis, Walk. 



b. Abdomen maris fasciculo nullo nigro. 



a. Alae anticae vitta costali lata. - - beryllalis, Guen. 



b. Alae anticae vitta costali tenui. - Baldersalis, Walk. 



B. Tibiae posticae cristatae. - - squamopedalis, Guen. 



16. Margaronia Politulalis. 



Alba; alee semihyalince ; antica costa ochracea, apice margineque 

 exterior e viridibus. 



Phalaena-Noctua Polita, Cram. Pap. Exot. ii. 35, pi. 120, f. A. 

 Margaronia congradalis, Hubn. Verz. Schm. 358, 3430. 

 Margarodes Politulalis, Guen. Delt. et Pyral. 308, 330. 



Sierra Leone. 



17. Margaronia transvisalis. 



Alba; palpi et thoracis laiera antica subochracea; pedes antici ex 

 parte subochracei ; alee subhyalince ; antica costa subochra- 

 cea, puncto discali nigro. 



2z3 



