THK CANADIAN ENTOMOLOGIST. 323 



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Subfamily I. — Gorytinse. 

 This subfamily approaches nearest to the Mellinidffi and is the only 

 one that could possibly be confused with it. The characters of the first 

 abdominal segment and of the mesopleura, already pointed out, will, 

 however, readily separate it from the Mellinidse. 



From the other subfamilies, into which this family is divided, it is 

 separated by the sessile second cubital cell, and, as a rule, by the distinct 

 mesosternal suture. 



The genera are somewhat numerous and closely allied, but may be 

 distinguished by the use of the following table : 



Table of Genera. 

 Mesosternum not separated from the mesopleura by a longitudinal suture 

 or carina, the latter entirely wanting or mdicated only slightly ante- 

 riorly ; cubitus in hind wings originating beyofid the transverse median 



nervure, very rarely interstitial or nearly 4- 



Mesosternum always distinctly separated from the mesopleura by a 

 longitudinal suture or carina (sometimes difficult to discern on account 

 of the pubescence). 



Cubitus in hind wings originating before the transverse median 



nervure, or interstitial or nearly . . 2. 



Cubitus in hind wings originating y^r beyond ihe transverse median 

 nervure; stigma not well developed, the radius originating from 

 its apex 3. 



2. Cubitus in hind wings originating far before the transverse median 

 nervure. 



Triangular area of metaaotum sharply defined by grooved lines, 

 the enclosure smooth, polished, not striate, or at most only 

 slightly striate laterally at base, . . . Pseudoplisus, Ashm., n. g. 



(Type G. floridanus. Fox.) 

 Cubitus in hind wings interstitial or originating only a little before the 

 transverse median nervure. 



Cubitus in hind wings most frequently originating a little before 

 the transverse median nervure ; triangular area of metanotum 

 always well defined, the enclosure always longitudinally 



striate Hoplisus, Lepel. 



Cubitus in hind wings ijiterstitial ; triangular area of metanotum 

 not sharply defined, but striate or coarsely 

 rugose Hoplisoides , Gribodo. 



