/ 



THE CANADIAN ENTOMOLOGIST. 277 



as to the sex, I failed to find anything approaching a horny ovipositor, 

 leads me to believe that the genitalia possessing prominent horny parts are, 

 among Scolytids, found only in the male 



The descriptions referred to in the following list, unless otherwise 

 noted, will be found in Rhynchophora of America, north of Mexico, by 

 LeConte & Horn, 1886 : 



PLATYPUS. 



P. quadridentatus, Oliv. $ = description of ? . ? new = description of 



$ P. flavicortiis, except that the two large punctures each side of 



the anterior extremity of the short dorsal impressed line, referred 



to, are not punctures, but smooth, shining and slightly convex 



spaces. 



P. compos iius, Say. ^ = description of $ . $ = description of $ . 



CORTHYLUS. 



C. pundatissimus, Zimm. $ = description of 9 . ? = description of ? . 

 C. Columbiamis, Hopic. $ = description of ? . ? = description of $ . 



Proceedings Entomological Society of Washington (not published), 



also Bulletin 36, W. Va. Expt. Station. 



MONARTHRUM. 



M. fasciatum, Say. ^ = description of $ . $ = description of ^ . 

 Additional : ^ : front with coarse punctures ; $ : front with fine 

 punctures, and with slight depression in the middle. 



M. mail, Fitch. $ = description of $ . ? = description of ^ except in 

 the long spine referred to, which is not present in any of my ex- 

 amples of e'lihQx fasciatum or ma/i. The long hairs on the club, 

 when adhering, as they often do, resemble a spine. The longest 

 hairs rise from the base of the club on the side next to the head. 



GNATHOTRICHUS. 



G. rettisus, Lee. $ = description of ? . ? = description of ^ . 

 Additional : ^ . Club of antennae with a few short, stiff hairs. No 

 long bristles. Head with a longitudinal elevation in front. $ . 

 Antennae with a long bristle rising from the anterior edge of each 

 joint of the funiculus, and the first and second joint of the club ; 

 also with a few long hairs, all curving upwards. 



G. materiarius, Fitch. $ = description of ? (?). 9 new. Antennse 

 with long hairs and' bristles as in retusus. Head smooth and sparsely 

 punctured. Additional: ^. Head with elongated longitudinal 

 elevation in front, ending in an acute point just above base of 

 mandibles. 



