510 LIEUT.-COL. C. SWINHOE ON [Nov. 4, 



Kandahar, carefully recording captures each day ; and in separating 

 species T found that, although all four of these forms seemed to be 

 common at Kurrachee, I had still a number of examples that seemed to 

 belong to none of them, and yet were closely allied to each. 



On my return from field service, when passing through Kurrachee, 

 I engaged a man to collect for me from April to August 1883, and 

 Mr. Murray, the Curator of the Kurrachee Museum, very kindly 

 agreed to have the collections brought to him daily for labelling. 



The result is that, after setting out some hundreds of examples, I 

 can show a perfect series from T. phoenius (of Sind) to T. dulcis. 

 The normal form, I believe, must have been T. phoenius. It is 

 beautifully and clearly marked, and is quite distinct from all the 

 other species of the T. danae group. But as T. dulcis was first 

 named, T. phoenius, as well as T. dirus and T. eboreoides, must 

 sink into synonyms. 



The types of all four forms,when taken separately, appear to be quite 

 distinct ; but from examination of my long series captured in the 

 same months of the year at the same place, I think I have satisfied 

 Mr. Butler that all are of the same species. 



Similar variations, it will be seen, occur in the T. etrida group, 

 also in the T. eucharis group, from Bombay and Southern India 

 generally ; and it is worthy of remark that, although the variations 

 seem to occur commonly in the group Callosune, the whole 

 of the subgenus Idmais appears to be remarkably constant in all 

 the yet known species. 



47. Teracoltjs immaculatus. 



Teracolus immaculatus, C. Swinhoe, P. Z. S. 1884, p. 443. 

 Kurrachee, August. 

 This is, I am inclined to think, only a spotless variety of T. dulcis. 



48. Teracolus subroseus. 



Ter. subroseus, C. Swinhoe, P. Z. S. 1884, p. 443, pi. xl. figs. 

 6,7. 



Kurrachee, July and August. 



A perfectly distinct and pretty species. 



49. Teracolus etrida. 



Anthocaris etrida, Boisduval, Sp. Gen. Lep. i. p. 576 (1836). 



Ter. purus, Butler, P. Z. S. 1876, p. 160, n. 113, pi. vii. f. 14, 

 15. 



Kurrachee, April to July, very common. 



Examples vary much in size aud in markings and general coloration. 

 The hind wings of some of the males are almost immaculate, and 

 many of the females are without the discal markings of the type ; 

 but, as in the T.-dulcis group, the number of intermediates found on 

 an examination of a very large series makes it impossible to separate 

 them. 



