Mr. A. G. Butler on new Sjjecies of Lepidoptera. 31 



Without asserting the identity of these two forms, it 

 becomes necessary to point out the very close relation existing 

 between them ; and it may be that they are only the old and 

 young conditions of one species. The concentric ridges on 

 the body-whorl of E. sculptus become wider apart as the 

 suture is approached, when they often assume very much the 

 appearance given in the figures of E. funatus referred to. 

 The apparent similarity between these shells should be indi- 

 cated, in case any difference may be detected in their oper- 

 cula. That of E. funatus has not been described, so far as I 

 know. 



EXPLANATION OF PLATE II. 



Fig. 1. A small circular operculum (?) produced into a blunted denti- 



culation. Law Quarry. 

 Fig. 2. A small oval operculum, with a central globular nucleus. Law 



Quarry. 

 Fig. 3. An elongated pinna-shaped body, probably an operculum. Law 



Quarry. 

 jFY^. 4. A thin, somewhat auriform body of the same nature. Inverteil 



Quarry, near Kirkcaldy, Fife. 

 Fig. 5. A small, thin, round operculum. Law Quarry. 

 Figs. 6 & 7. Two small shells, probably species of Naticopsis, with the 



opercula in situ. Law Quarry. 

 Fig. 8. Naticopsis Phillipsii, M'Coy, with the operculum in place, but 



partially abraded on one side. Collection, British Museum. 

 Fig. 9. A supposed operculum, conical and with imbricating ridges. 



LTpper Silurian, island of Gothland. Collection, British 



Museum. X 2. 

 Figs. 10 & 11. Euomphalas sculptus, Sow., with the operciilum in place. 



Wenlock Limestone. Collection, British Museum. 

 Fig. 12. Another specimen, but with the outer side of the operculum 



somewhat conical. Collection, British Museum. 

 Fig. 13. The opercidum of E. sculptus free. Collection, British Museum. 

 Fig. 14. Euomphalus sculptus ? with a shining scarcely spiral operculum. 



Collection, British Museum. 

 (N.B. The originals of figs. 1-7 are in the cabinet of Mr. James 

 Bennie.) 



V. — Descriptions of new Species of Lepidoptera in the 

 Collection of the British Museum. By Arthur G. Butler, 

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



[Plate IV.] 



The species described in the present paper are chiefly from 

 India and China, all, with one exception, being Asiatic, and 

 the latter being the first African species in a hitherto purely 

 Asiatic genus. 



