THE CANADIAN ENTOMOLOGIST. oil 



defined ; third antennal joint longer than the fourth ; 



claws cleft Hypotaxonus, Ashm., n. g. 



(Type T. pallipes, Say.) 

 Clypeus truncate anteriorly or at most sub-emarginated ; 

 frontal area distinct, enclosing the front ocellus ; third 

 antennal joint not longer than the fourth ; claws 



simple Hemitaxonus, Ashm., n. g. 



(Type T. dubitatus, Nort.) 



12. Hind wings without a discal cell 14. 



Hind wings with one discal cell 13. 



Hind wings with two discal cells ; anal cell in hind wings a little 



shorter than the submedian, briefly petiolated..Heptamelus,Haliday. 



( = Caenoneura, Thorns.) 



13. Anal cell in hind wings a little shorter than the submedian, briefly 



petiolated ; claws cleft or bifid. 



Abdomen depressed, ovate ; first submarginal cell much longer 

 than the second ; antennae long, the flagellum sub- 

 compressed Harpiphorus, Hartig. 



Abdomen more or less compressed, strongly constricted 

 beyond the base ; first submarginal cell not or scarcely longer 

 than the second ; antennae short, slender, thickened beyond 

 the middle Emphytoides, Konow. 



14. Anal cell in hind wings shorter than the median ; clypeus anteriorly 



sub-emarginated ; claws with a Small tooth at base, Emphytus,Klug. 



Subfamily IV. — Tenthredinin/E. 



This subfamily is probably the most extensive one in the family, 

 there being several hundred species already described, the majority of 

 which are found in the Palearctic and Neotropical regions. The sub- 

 family is easily recognized by the lanceolate cell in the front wings, which 

 is either contracted before the middle and closed, or divided into two 

 parts by a straight or an oblique nervure. 



Two of the described genera, \\z.,Parabia, Somenow.and Cocosyndia, 

 Kirby (- Pampholyx, Freyniuth), I have been unable to place in my 

 tables, not being able to obtain specimens, nor to consult the descriptions. 



Pampholyx, Freymuth, was changed to Cocosyjidia by Kirby on 

 account of the former name being preoccupied ; but he gives no descrip- 

 tion of it, merely stating that it is the only wingless sawlly known. I have 



