Catalogue of North American Sphinges. 311 



the outside with long orange-colored hairs ; spurs covered with 

 white hairs. Expands from thirteen to fifteen lines. Larva, 

 similar in form and color to those of other species of the genus, 

 lives in the pith of squash and pumpkin vines, which it leaves at 

 the root, and forms in the ground a cocoon composed of grains of 

 earth cemented by a gummy matter. Pupa, by the aid of the 

 abdominal denticulations, almost entirely excluded from the co- 

 coon during the last transformation. 



The sudden death of the squash-vines, during midsummer, is 

 occasioned by the ravages of the larva of this insect. For further 

 particulars relating to it, a communication, by the author, in the 

 New-England Farmer, Vol. VIII, p. 33, for 1828, may be con- 

 sulted. This species seems to be closely allied to, but sufficiently 

 distinct from the tibialis of Drury, and the Bombiliformis of 

 Cramer. 



3. ^. caudata. H. = fulvicornis. H.* (Catalogue.) 

 Brown ; male with the fore-wings transparent from the base to 



the middle ; hind-wings transparent, with a brownish border, 

 fringe, and subcostal spot ; antennae, palpi, collar, and tarsi tawny 

 yellow ; hind-legs yellow, end of the tibios and first tarsal joint 

 fringed with tawny yellow and black hairs ; tail slender, cylindri- 

 cal, nearly as long as the body, tawny yellow, with a little black 

 tuft on each side at base. The female differs from the male in hav- 

 ing the fore-wings entirely opaque ; the hind-legs black, with a 

 rusty spot in the middle of the tibise, and fringed with black ; cau- 

 dal tuft of the ordinary form and size. Expands from one inch 

 to one inch and three lines. Larva inhabits the stems of our 

 indigenous currant, Rihes Floridum. 



The Zygcena caudata, of Fabricius, has a somewhat similar 

 tail, but does not belong to the genus jEgeria. 



4. JE. SyMngoi. H. 



Brown ; fore-wings with a transparent line at base ; hind-wings 

 transparent, with a brown border, fringe, and subcostal spot ; an- 

 tennas, palpi, collar, first and second pairs of tarsi, and middle of 

 the intermediate tibiae rust-red ; middle of the tibiae and the tarsi 

 of the hind-legs yellow. Expands one inch and two lines. Larva 

 lives in the trunks of Syringa vulgaris, the common lilac. 



* Credited to Mr. Say, in the Catalogue of the Insects of Massachusetts, by- 

 mistake. 



