1864.] 655 



brown, linear. Second segment protuberant centrally. Third segment 

 with a dark brown nearly central plait, bisected medially by some gra- 

 nulations. Abdominal segments minutely wrinkled transversely, punc- 

 tulated anteriorly; the posterior segments conical and contracted. 

 Terminal spine .12 in. long, flat, attenuated, granulated, slightly bifid 

 under a lens. 3 % . 



Its pupation is in a ground cell, at the ordinary depth. The pupa 

 usually has its posterior segments bent on one side. For one now in 

 my possession, the larva of which was taken in August last, and from 

 which I hope to determine the species, I am under obligations to Mr. 

 Gregg Johnson. 



Sphinx cinerea Harris. 



Larta. 3 in. to 3.25 in. long; cylindrical, greenish white, shading 

 into white dorsally. Head semi-oval, flat, green, with yellow lateral 

 lines. The thoracic segments transparent, more tinged with green ; a 

 few small granulations on the annulations of the segments, which are 

 yellow-green laterally and white dorsally. The seven lateral bands pale 

 yellow, edged with darker green anteriorly, traversing the entire seg- 

 ment above the stigma and continued over six-eighths of the following, 

 in white edged with pale green above. Stigmata linear, bordered with 

 white. Caudal horn rose color, long, curved, with a prominent base, 

 sometimes tipped with blue. Caudal shield edged with light green. 

 Legs rose color. 



Feeds on the Lilac, from one bush of which six were collected on the 

 20th day of August, nearly full grown. From its being so seldom 

 taken, while its imago is perhaps the most common of the Sphinges, its 

 occurrence on the Lilac which has hitherto been alone given as its food- 

 plant, is undoubtedly exceptional. It has been taken by W. H. Ed- 

 wards, Esq., on the White Ash {Fraxiiim Amcricamts.) Mr. Samuel 

 F. Bagg, of this city, informs me that he has found it near a hedge of 

 Privet (Li(/ustrum vidgare\ upon which he subsequently matured it. 

 It may also be searched for on the Fringe tree {Chionanthus Viryinicu) 

 and on other species of Fraxinus, as it probably ranges over the entire 

 Order of our Olcaceee. 



Pupa. 2 in. long, .60 broad. Chesnut brown. Head-case depressed, 

 projecting by nearly the length of the first segment beyond it. Tongue- 

 case — its base anteriorly advanced nearly to the vertex of the head-case. 



