160 MR. A. G. BUTLER ON THE GENUS TERACOLUS. [Jan. 18, 



with narrower orange patch, the basal grey scaling darkest on costa, 

 and of a bluish colour ; the apical area below lemon-yellow, the spots 

 on its internal border squamose : secondaries above with larger mar- 

 ginal spots ; below with the discal spots less strongly defined, and the 

 base not yellow as in the primaries. Expanse of wings 1 inch 

 8 lines. 



$ . Distinguished by the dark brownish grey scaling over basal 

 third, the larger and better-defined black spots, especially those on 

 the disk of secondaries ; the under surface of secondaries clouded 

 with greyish. Expanse of wings 1 inch 7 lines. 



d, Kussowlie, N.W. Himalayas; S 2> India (Farr). 



Coll. F. Moore. 

 This species must have been mixed up with Dr. Boisduval's exam- 

 ples of T. etrida, since his description of the female agrees with this 

 form alone ; it can never, I think, have come from Madras or Pegu. 



113. Teracolus purus, n. sp. (Plate VII. figs. 14, 15.) 



cJ . Distinguished from T. pernotatus by its purer white colora- 

 tion, the base in the male scarcely visibly tinted with grey, but in 

 the female as in the above-mentioned species ; the apical area almost 

 black, with a narrow regular slightly curved band of five orange 

 spots ; only the uppermost and lowermost of the three discal spots 

 visible in the female, and the three uppermost of the discal series of 

 secondaries ; black marginal spots of secondaries better defined, 

 rounded : wings below with the base and apex of primaries sulphur- 

 yellow ; the female with the whole of the secondaries, excepting the 

 discoidal interspace, more or less tinted with the same colour ; only 

 the two uppermost of the discal spots in the secondaries of the male 

 below visible ; in the female they are all present, but smaller. Ex- 

 panse of wings, c? 1 inch 3 to G lines, $ 1 inch 6 to 8 lines. 



6 ? , Punjab (type, B.M.) ; cJ 2 , Punjab (coll. F. Moore). 



We have what I believe to be this species also, marked " India ;" 

 but the examples are in bad condition. 



114. Teracolus etrida. 



cj . Anthocharis etrida (part), Boisduval, Sp. Gen. Lep. i. p. 576. 

 n. 24 (1836). 



2 . Like the female of T. purus, but rather larger, with the apex 

 more rounded, the primaries above yellowish, the costal and discoidal 

 areas of primaries and outer margin of secondaries below distinctly 

 sulphur-yellow. Expanse of wings 1 inch 7 lines. 



S $, Scinde; ?, Masuri (Grote) ; S, Canara (typical form). 



Coll. F. Moore. 



The male has the orange patch broad at costa and tapering to 

 near the second median branch ; but it is more readily recognized 

 by the coloration of the under surface of the secondaries, which is 

 white, with yellow diffused outer border ; a small black dot at end of 

 cell, and two subcostal pale brown spots near apex : the Canara 

 example has the basicostal area of primaries above darker than ia 

 the specimens from Scinde ; but in other respects it agrees with them 



