some species of the genus Teracolus. 389 



marginal streaks on the upper side of the hindwing. Underside 

 similar to that of the male but paler. Cilia of both wings dark. 

 Exp. 56-60 mm. 



Hab. Northern Territories, Gold Coast. 



This species is described from seven examples obtained 

 by Capt. Armitage. Both sexes bear a close superficial 

 resemblance to the female of Pieris creona var. sigirrensis 

 Strand, Fig. 5, which is a common insect in the same 

 locality. This species most nearly approaches catachrysops 

 (Seitz, xiii, pi. 16c) on the upperside, but the submarginal 

 series of spots on both wings is nearly obsolete, the insect 

 is much larger and the broad black marginal band is 

 identical on the upper and under sides of both wings in 

 armitagei; also, only the base of the forewing is orange in 

 this species. Professor Aurivillius regards catachrysops as 

 one of the forms of vesta, of which species, unless we include 

 amelia, Lucas, no form has hitherto been recorded from 

 W. Africa. In some respects armitagei has perhaps more 

 affinity to amelia than to catachrysops, which former 

 species, Aurivillius remarks, is perhaps only another race 

 of vesta. In amelia the discal band of the hindwing is 

 said to be placed far behind the middle and to be almost 

 confluent with the marginal band, so that the submarginal 

 spots are small. In armitagei there is no separable discal 

 band, the only band being the broad marginal one from 

 which the pale spots are for the most part absent. Both 

 species have the cell of the forewing beneath orange, but in 

 amelia the veins of the hindwing are said not to be darkened, 

 whereas veins 16 and Ic in armitagei are orange where 

 they traverse the pale area. It is probable that annitagei 

 may prove to be an extreme form of amelia, but I have 

 not had the opportunity of seeing a specimen of the latter, 

 which is only known to me from the short description here 

 referred to. 



EvippE Group. 



2. T. ione Godt. Fig. 1, (J upperside; Fig. la, <^ under- 

 side ; Fig. 2, $ upperside ; Fig. 2a, $ underside. 



This insect is apparently common in the spring and early 

 summer in the Northern Territories, numerous specimens 

 of both sexes having been sent me by Capt. Armitage, all 

 of which seem constant. They differ from the figure 

 given in Seitz (pi. 176), in that the veins on the upperside 



