54 JOHN B. SMITH. 



According to Mr. Lintner the sexes of Sphinges may be detei-- 

 niiued in the pupa state by the following characters, which are, how- 

 ever, not equally developed : 



% . — Eleventh segment inferiorly similar to the preceding, and its 

 posterior incision is not interrupted and rectilinear. On the twelfth 

 segment, occupying its full length, are two prominent elongated 

 granulations, divided by a deeply impressed line. Posterior to this 

 is the anal plate, having a central sulcus, with prominent margins, 

 with a suboval, smooth, depressed spot; this is similar in b(^th sexes. 



9 . — Eleventh segment inferiorly marked with an impressed medial 

 line, on each side of which, near the middle of the segment, is a sub- 

 oval, smooth spot, through which the impressed medial line is con- 

 tinued ; the intermediate incisure is interrupted by the smooth spot, 

 and, in some species, is bent in an angle directed anteriorly. 



It may be interesting to give a brief review of the principal clas- 

 sifications heretofore proposed, which will supplement the rather 

 brief characterization given by me. 



The genus Sphinx was created by Linnaeus, in 1758, in the " Sys- 

 tema Naturae," and defined as follows : 



" Sphinx. — Antennce medio crassioresf. ntraque extremitate attemiatce, 

 siibprismaticce. Alee defiexce {volaiu graviore vesperthio f. viatatino). 



This genus he divides into four groups as follows : 

 Legitime alis angulatis. 



" alls integris, ano simplici. 



" alis integris ano barbato. 



Adsc;it^ habitu et larva diversce. 



In that general term Sphinx were included all the forms known to 

 Linnaeus belonging to the present families Sphingidce, Sesiidce and 

 Zygcemd(e. The first and second divisions associate tolerably con- 

 gruous species ; the third contains a mixture of Sphingidce and Sesii- 

 dce, while the fourth has nothing to hold it together save that the 

 species do not belong to either of the foregoing divisions. 



No changes were made by Linne in this classification in his subse- 

 quent writings. 



Fabricius, in 1775, in the " Systema Entomologise" divides the 

 insects into eight classes, corresponding practically to the Linnaean 

 orders, but with difierent names. The Lepidoptera are here the 

 Glossata (Ospalpis linguaque spiralis). The Linnaean generic terms 

 and divisions are retained and somewhat elaborated, while several 

 new terms are proposed. 



