071, new Sj^ecies of Heterocera fi-om Japan. 393 



LI. — DescTijptions of new Species of Heterocera from Japan. 

 — Parti. Sphinges and Bomhjces. Bj Arthur G.Butler, 

 F.L.S., F.Z.S., &c. 



The cabinets of the British Museum having been recently 

 enriched by the purchase of the private collection of moths 

 made at Yokohama by Mr. Jonas, it has been thought desira- 

 ble to devote the second part of the ' Illustrations of Typical 

 Specimens of Lepidoptera Heterocera ' to the description and 

 representation of the moths of Japan ; and since some little 

 time must necessarily elapse before that part will be published, 

 I propose to give brief preliminary diagnoses of new species 

 in the present paper. 



Sphingidse. 



1. Trijptogon piceipennis^ n. sp. 



Allied to T. spercMus, but the primaries much greyer, the 

 lines all distinct, those of the central area much less divergent 

 on the costa, the secondaries of the male deep piccous or 

 purplish brown, of. the female paler, becoming gradually 

 redder from the inner margin to the apex ; body darker, with 

 well-marked dark longitudinal thoracic crest. Expanse, ^ 

 4 inches 6 lines, $ 4 inches 11 lines. 



Yokohama {Jonas). 



2. Hyloicus caligineus^ n. sp. 



Allied to H. pinastri^ but differing in its dark smoky grey 

 colouring, the white markings on the body and the lateral black 

 spots on the abdomen wanting, the transverse bands on the 

 primaries and the secondaries smoky brown, the two longitu- 

 dinal black dashes on the primaries shorter and more linear. 

 Expanse, <^ 2 inches 8 lines, $ 3 inches 2 lines. 



Yokohama {Jonas). 



Zygasnidse. 



3. Zygccna nijyhona, n. sp. 



Allied to Z. dorycnii, but the cai-mine spots of primaries 

 greatly enlarged, all excepting the basi-subcostal one confluent; 

 the spot in the cell pyriform, united to the discocellular s])ot 

 by its projecting elongation ; abdomen purplish instead of dark 

 green above, the three subterminal segments carmine. Ex- 

 panse, cf 1 i'^ch 3-5 lines. 



Yokohama {Jonas). 



