10 DB. w. J. hoUjAnd on thb afbioan [Jan. 14, 



cian name for this insect. Perhaps he is following in this the 

 example of Ploetz, who referred some insect obtained from Kordofan 

 to the Pabrician species. But, -whatever may liave been the insect 

 before Ploetz at the time he was writing, it is certain that it was 

 not the insect described by Pabricius. In Jones's ' Icones ' (unpub- 

 lished) we have the best clue to many of the Pabrician species, and 

 the figure of H. nerva there given (vide pi. 72. fig. 3) represents 

 undoubtedly a species of Hesperia {Pyrgus, Hiibn. et auct.). The 

 published references to Hesperia nei-va, Fabr., are the following : — 



Hesperia nerva, Fabr. Ent. Syst. iii. p. 340, no. 293 (1793) ; 

 Latreille, Enc. Meth. ix. p. 789, no. 162 (1823). 



Pyrgiis nerva, Butl. Fabr. Diurn. Lep. p. 282 (1869). 



Ephyriades nerva, Ploetz, JB. Nass. Ver. xxxvii. p. 6 (1884). 



The habitat of //. nerva is given by Fahricius as " in Indiis," to 

 which little significance need be attached, as we know that this 

 phrase with the old writers often meant no more than that the 

 insect came from a foreign country. 



19. S. AimiMABGO (Mab. MS.), sp. nov. (Plate IV. fig. 8.) 



Tahra.ca aurimargo, Mab. in Uteris. 



S . The antennte and the upperside of the thorax and abdomen 

 are black, as is also the underside of the thorax and abdomen, 

 except at the anal extremity, where it is marked with orange-yellow ; 

 the ground-colour of the primaries and secondaries is dark brown, 

 almost black. The primaries are ornamented by three minute 

 translucent subapical spots in the usual position. The outer 

 margin of the secondaries near the anal angle and the cilia for 

 the inner half of the wing are orange. On the underside, the 

 primaries are coloured and marked as upon the upperside. The 

 secondaries have the orange colour which appears upon the upper- 

 side near the anal angle much mora broadly diifused, covering the 

 outer half of the wing as far as the subcostal nervules. The costal 

 margin and the base are broadly blackish brown, and the yellow 

 space is interrupted by an irregular row of discal spots, of which 

 the one opposite the end of the cell is the largest and confluent 

 with the dark costal araa. 



Expanse 28-30 mm. 



Hah. Gaboon (Mocquerys) ; Sierra Leone (Prews), Types in 

 coll. Staudinger. 



This beautiful species has been named Tahraca aurimargo by 

 Mons. Mabille. In neuration and most other respects it agrees 

 with Sarnngesa absolutely, and I cannot bring myself to recognize 

 in it the type of a new genus. 



20. S. MACULATA, Mab. 



Sape maculata, Mab. C. E. Soc. Ent. Belg. 1891, p. Ixviii. 

 Hab. Mozambique {Mabille). 



I have no clue to the determination of this species other than 

 the description of the author. 



