562 h. de Nicevilie — Little-Known Butterflies from the [No. 3 y 



Family PAPILIONID^E. 

 Subfamily Pierin^e. 



17. Delias dives, n. sp., Plate I, Fig. 1, tf. 



Habitat: Penang. 



Expanse : d 1 , 26 inches. 



Description: Male. Upperside, both wings chalky-white, all the 

 veinsblack. Foreiving with the discoidal coll, especially outwardly, slight- 

 ly dusted with black scales ; the outer margin black, this black border 

 extending along the veins for a short distance, the area between this black 

 border and the end of the cell heavily sprinkled with black scales. 

 Hindwing unmarked, except that the outer margin is narrowly black. 

 Underside, foreiving white ; the costa broadly extending into the dis- 

 coidal cell and all the veins heavily bordered with black, so that the 

 ground-colour is reduced to narrow streaks between the veins ; a sub- 

 apical series of five prominent cordate white spots from the costa to 

 the second median interspace, the first spot small, the second the largest, 

 the rest decreasing in size, these spots shew through faintly on the 

 upperside. Hindwing chrome-yellow ; all the veins narrowly but pro- 

 minently defined with black ; the outer margin narrowly black inwardly 

 defined by white spots between the veins. 



Allied to D. agostina, Hewitson, from Sikkim, Bhutan, Assam and 

 Upper Burma, from the same sex of which it differs on the upperside in 

 having the forewing heavily infuscated on the outer half, on the under- 

 side of that wing in having the series of subapical spots smaller and 

 fewer in number, the second spot of D. agostina being absent in 

 J), dives ; on the hindwing in having all the veins conspicuously defined 

 with black, and with no submarginal black line inwardly defining the 

 series of marginal white spots as there is in D. agostina. Other more 

 distantly allied species are D. themis, Hewitson, from the Philippines, 

 D. cathara, Grose Smith, from Kina Balu mountain in North Borneo, 

 and D. agoranis, Grose Smith, from Burma. The D. singhapura of 

 Wallace, from Singapore, Sumatra and North Borneo, is also closely 

 allied, but the apex of the forewing as figured — the male by Wallace 

 and the female by Grose Smith and Kirby — is greatly produced, and 

 the black border to the hindwing on the underside is twice as broad, 

 and encloses a row of six paired whitish spots between the veins. 

 Herr H, Fruhstorfer has recently briefly described in " Societas Ente- 

 mologica," p. (1897), Delias singhapura, subspecies distincta, from 

 the Province Amuntai in South Borneo, which probably is another 

 allied species, but without a figure it is difficult to make out exactly 

 what it is like, especially as nothing is said about its outline. 



Described from a single example in my collection. 



