196 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL, III 



Hypnoidus. According to Hyslop (1921), Elater riparius Fabricius 

 was designated by West wood in 1840 as the type of Hypnoidus 

 Stephens; in 1859 the same species was designated by Thompson 

 as the type of Cryptohypnus. If riparius be used as the type of 

 Hypnoidus, then species such as H. dubius (Horn), H. musculus 

 (Eschscholtz) and H. maritimus Curtis must be placed in a distinct 

 genus. On the basis of larval characters, riparius and its allies defi- 

 nitely are not congeneric with H. dubius and its allies. ^^ The latter 

 group have simple urogomphi, a i -segmented galea, a very character- 

 istic mandible, the prosternum undivided, and several other char- 

 acters which separate them widely from the species which commonly 

 have been placed in Cryptohypnus. 



THE TRIBE LEPTUROIDINI 



Without a careful study of the larvae of other tribes of the Pyro- 

 phorinae, the writer cannot appraise properly the status of the Lep- 

 turoidini. However, it would appear to be a reasonably well-character- 

 ized group. Crytohypnus and Melanactes, which Leng (1920) placed 

 in the tribes Hypnoidini and Melanactini, respectively, properly be- 

 long in the Lepturoidini. The most aberrant genera are Eanus and 

 Hypnoidus. These are extreme forms and appear to be quite isolated 

 within the tribe. It may be that larvae eventually will be found to 

 link these genera more closely to the other Lepturoidini. 



LIST OF SPECIES STUDIED 

 This Hst is designed to serve two main purposes : First, as an 

 index to the principal descriptive sections on each species ; and second, 

 as a ready reference to the continental representation and the general 

 reliability of the material used. The genera are listed alphabetically 

 and the species alphabetically under each genus. The following 

 symbols are used: Aus. for the continent of Australia; Eur. for 

 Eurasia; N.A. for North America; * for species of which reared 

 adults and their larval exuviae were available to the writer; # for 

 species whose identification was known to be or believed to be based 

 upon rearing, but reared adults could not be obtained for confirma- 

 tion ; X for species whose identification was believed to be fairly 

 reliable, but not based upon rearing as far as was known ; and o for 

 species whose identification was very uncertain. Symbols in paren- 



1" Support of this conclusion is given in a recent critical review based upon 

 adult characters. (Vide M. C. Lane, "Some Generic Corrections in the Ela- 

 teridae, II," Proc. Ent. Soc. Washington, vol. 50, No. 8, pp. 221-223, November 

 1948.) 



