114 Mr. A. G. Butler ore new Lepidoptera 



right- and left-hand body-margins usually convex, occasionally 

 flattened and nearly parallel, or slightly concave ; dorsal sur- 

 face minutely roughened, not carinate or furrowed ; peristome- 

 field capacious, the posterior extremity of the right-hand bor- 

 der ciliate, the anterior extremity deeply excavate, disposed to 

 be helicoidal ; frontal styles six, long ; ventral styles three ; the 

 two right-hand caudal setae multifid, the two on the left-hand 

 side simple ; anal and frontal styles often fimbriate ; nucleus 

 very long, band-shaped. Length of carapace y^o inch. 



Hah. Standing pond- water, with Anacharis. 



The ad oral cilia may here be divided into two groups 

 according to the direction of their free extremities, those on 

 the truncate frontal border being directed outwards from that 

 margin, while those on the left-hand side of the peristome- 

 field are habitually vibrated and directed across and above 

 that capacious excavation. The change of position takes 

 place suddenly and is somewhat conspicuous. 



The helicoidal flexure of the anterior portion of the peri- 

 stome-field is variable. At times it is deep and conspicuous ; 

 in other individuals it is only a slight notch, while in 

 others again it may appear only as an irregular depression. 



EXPLANATION OF PLATE HI. 



Fig. 1. Litonotus vermicularis, X 190. 

 Fig. 2. Chilodon vorax, X 138. 

 Fig. 3. Loxodes magnus, X 120. 

 Fig. 4. Onychodromopsisjlexilis, X 280. 

 Fig. 5. Holosticha vernalis, X 210. 

 Fig. 6. Tachysoma agile, X 300. 

 Fig. 7. Tachysoma mirabile, X 415. 

 Fig. 8. Tachysoma par vistylum, X 360. 

 Fig. 9. Oxylricha hifaria, X 256. 

 Fig. 10, Oxytricha Jiymenostovia, X 350, 

 Fig. 11. Oxytricha acuminata, X 300. 

 Fig. 12. Oxytricha caudata, X 360. 

 Fig. 13. Histrio inqiiietus, X 490. 

 Fig. 14. Histrio complanatus, X 256. 

 Fig. 15. Fuplotes variabilis, X 160. 



XI. — Descriptions ofneio Byecies of Heterocerous Lepidoptera 

 {Pyralites) from the Solomon Islands. By Aethue G. 

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



The following species, collected by Mr. C. M. Woodford, 

 appear to be new to science. 



