r&R The Advancement of Scibr( 



PSYCHE. 



ORGAN OF THE CAMBRIDGE ENTOMOLOGICAL CLUB 



EDITED BY GEORGE DIMMOCK AND B. I'ICKMAN MANN. 



Vol. II.] Cainbridive, Mass., Sept.-Dec, 1879. [Nos. 65-68. 



Descriptions of some Larvae of Lepidoptera, respect- 

 ing Sphingidae especially. 



(Continued from p. 6.5-79.) 



Tlie first volume of the Species general des Lejndopteres 

 heteroeeres, by Dr. J. A. Boisduval, treats of the Sphingidae, 

 Sesiidae and Castnidae in a systematic and descriptive manner, 

 with scant reference to the descriptive literatnre, and is accom- 

 panied with plates, which have not been examined in the prep- 

 aration of tiiis article. Larvae of the North American species, 

 genera and other groups of Sphingidae mentioned below 

 are described more or less completely on the pages indi- 

 cated. Ill the preparation of these descriptions Dr. Boisdnval 

 lias been aided [)riiicipally by the possession of a large number 

 of original and unpublished figures made by Abbot ; in addi- 

 tion to these he had sonn^ figures made by John Leconte and 

 by other persons. The descriptions of families and tribes are 

 reproduced here, in translation. 



SPHINGIDAE. p. 2. " Larvae smooth, cylindrical, elon- 

 gated, slightly swollen posteriorly, generally furnished with a 

 horn on the segment before the hindmost, or sometimes with a 

 little lenticular shield in place of the horn." '' The larvae live 

 solitarily, sometimes on trees or shrubs, sometimes on low 

 plants." 



Smerinthid.\e (tribe), p. 8. Larvae with habits and with 

 horn on eleventh segment as in other Sphingidae ; particularly 

 distinguished in most cases by having the head triangular and 

 the skin shao-reened or rugose. 



