350 Mr. H. Druce on new 



the anal angle ; the female more opaque than in D. pana- 

 mensisy not ochre-yellow on the secondaries ; therefore this 

 female would answer to the female of " D. panamensis " 

 figured in the ' Biologia.' 



Staudinger's D. chagris is said to resemble his D. pana- 

 mensis in both sexes, excepting that it has a somewhat 

 broader black apical border and the under surface of the 

 primaries is white with yellow costal border. 



Staudinger's D. cMricana is a " self," the male citron and 

 the female ochre-yellow ; it corresponds exactly with a pair 

 so-named in the Hewitson collection*, which I am satisfied 

 are conspecific with D. jiorinda ; whilst Hewitson's third 

 example is gamboge-yellow, and therefore is intermediate 

 between D. anceps ? and D, chiricana ? . 



As another instance of variation in ground-colour in this 

 genus I may mention that 1 have no doubt of P. pedrosina 

 being a mere form of P. pa^a'stra, differing in having the 

 secondaries and costa of primaries on the under surface white 

 instead of yellow ; there is no other difference by which to 

 separate them. 



My D. pedrosina, therefore, will sink as a seasonal form or 

 a sport of D. paloistra, Hopffer. 



XLIX. — Pescrijotions oj^ some new Species of Heterocera from 

 Iropical AJrica. By Heebeet Druce, F.L.S. &c. 



ZygsenidaB. 

 Saliunca, Walk. 



Saliunca ostia, sp. n. 



Male. — Primaries and secondaries uniform bright purplish 

 black ; primaries with a round white spot at the end of the 

 cell and one on the secondaries about the middle of the costal 

 margin ; the fringe of both wnngs black. Antenna?, head, 

 thorax, and abdomen bluish black ; legs black ; the thorax 

 has two small white spots at the base. — Female very similar 

 to the male, but larger and without any white spot on the 

 secondaries. 



Expanse, c? Hj ? H inch. 



IJab. East Africa, Dar-es-Salaam {Mus. Druce). 



* Staudinger's " ochre-yellow ' I should call blight orange. 



