1884.] lepidoptera from the lower nioer. 227 



Hesperid^. 



49. Pyrgus vindex. 



Papilio vinde.v, Cr. Pap. Ex. t. 3.53. f. G, H. 

 Pyrgus vindex, Doubl. & Hew. Gen. Diurn. Lep. t. 79- i- 6 ; 

 Trim. Rhop. Afr. Austr. p. 287. 

 A single specimen. 



50. Pamphila borbonica. 



Hesperia borhonicn, Boisd. Faun. Mad. p. 65, t. 9. f. 5, 6. 

 Pamphila borbonica, Tritii. Rliop. At'r. Austr. p. 303. 

 Two specimens. 



HETEROCERA. By H. Druce. 



Agaristid^. 



1. iEoocERA latreillii, Herrich-Schafifer, Aussl. Schmett, 

 t. 5. fig. 19. 



Mgocera wza^wa, Walk. Cat. i. p. 56. 



2. ^Egocera rectilinea, Boisd. Spec. gen. L^p. i. t. 14. 

 fig. 5. 



Arctiid^. 



3. Alga punctivitta, Walk. Cat. iii. p. 673. 



The specimens agree well with the type in the British Museum 

 from South Africa. 



Nyctemerid^e. 



4. Aletis forbesi, sp. n. (Plate XVII. fig. 4.) 



Pale chrome yellow; primaries with the apical third black, including 

 a transverse white patch and two posterior white spots. Secondaries 

 with a narrow marginal black band, which includes seven elongated 

 white spots. Antennae of male black, deeply pectinated. The thorax I 

 believe to be black, but it is so much rubbed that I cannot be certain 

 upon this point. Abdomen yellow, with the segments banded with 

 black. Legs yellow. The undersides the same as above. The female 

 agrees in all respects with the male, except that the antennae are not 

 pectinated. Expanse 1 1 inch. 



A small species, very distinct from any described. I have had two 

 specimens in my collection for some time, one from Old Calabar and 

 the other from the Cameroons : they agree in all respects with those 

 from the Niger. The Cameroons example is a female ; it is rather 

 larger, measuring nearly two inches across the wings. 



LiTHOSIIDtE. 



5. Deiopeia pulcbella, Linn. Syst. Nat. i. 2. 884, 349. 



