712 DR. A. G. BltTLER ON ' [Dec. 17, 



and distinct. I am inclined to conclude therefore that such differ- 

 ences as occur in 8t. Lucia may be purely varietal and not subject 

 to seasonal influence. 



4. Marpesia pkleus 8ulzer. 



5. Cystineura cowiAisrA (new species). 



6. DiONjii VANILLA Linn. 



This appears to be very common in the island. 



7. UiONE ouLiA Fabr. 



Lycenid^. 



8. Syntaeucus oassius Oram. 



The ISTew World forms of Syntarucus differ from those of the 

 Old World in the absence of a tail to the secondaries, but in all 

 other stnictiiral characters they agree : the general pattern is very 

 similar ; and, if all the forms referred to S. casnius are really 

 modifications of one species, the variability of that butterfly m.ust 

 be quite equal to that of -6'. telicanus. I ha\ e not, however, seen any 

 Continental examples so boldly marked or with so few bands on 

 the under svu'face of the primaries as in the examples occurring in 

 St. Lucia and Dominica. 



9. Chilades hanno Stoll. 



I have been unable to find any structural difference between the 

 Old and New World forms of this genus. 



10. Callicista salona 5 Hewits. 



The genus Callicista was founded by Grote for a little group of 

 hairy-eyed Thedinui of dull colouring, the males of which shoAv a 

 conspicuous black sexual braud at the end of the discoidal cell of 

 priuiaries ; the first two subcostal branches of these wings are 

 emitted well before the end of the cell, the third branch and the 

 upper radial being emitted almost from one point at the superior 

 angle of the cell. 



Papilionidje. 



n. Teeias YE^USTA Boisd. 



A common species both in St. Lucia and Dominica. 



12. Callidryas SENJf.i; var. Fabr. 



The West Indian form appears constantly to differ at all seasons 

 from typical O. sennce 5 in the smaller marginal spots and absence 

 of the biangulated discal series of the primaries on the upper 

 surface ; that sex also seems to be invariably either sulphur-yellow 

 or whitish, oecasionall}^ with a weak huffish tinge, but never golden 

 yellow as in some females of C. sennce. I doubt, however, whether 

 the dry phase of the West Indian form can be separated from 

 C. drya, the dry phase of C. sennce. 



