TUB CANADIAN ENTOMOLOGIST, 283 



Third joint of antennae slightly curved or slenderer at the 

 middle, with a short j)rojection at the base, not longer than 



the fourth Trichocampiis, Hartig. 



Third joint of antennro simple, uniformly 



thickened Priophorus, Latreille. 



2. Antenn;v simple, or at most with the third joint alone forked 3. 



Antennae with joints 3-5 and sometimes 6-7 with a more or less 



prominent branch at apex Cladius, Illiger. 



■z. Antenme with the third joint bent or a little slenderer at the middle 

 and usually with a short blunt process beneath ; second recur, 

 rent nervure in hind wings interstitial or uniting with the cubitus 



beyond the second transverse cubitus Trichiocampus, Hartig. 



Antennas simple, the third joint uniformly thickened ; second 

 recurrent nervure in hind wings joins the first submarginal cell 



before the second transverse cubitus Priophorus, Latreille. 



4. Front wings with four submarginal cells ; claws bifid. 



2 with the abdominal segments 7-8 not carinate ; $ with the 

 last abdominal segment entire, without a median 



furrow Camponiscus, Newman. 



Front wings with three submarginal cells (rarely with four) ; claws 

 simple. 



$ with dorsal abdominal segments 7-8 with median carinae ; 

 $ with the last dorsal abdominal segment with a median 



furrow , Anoplonyx, Marlatt. 



Subfamily II. — Nematin^. 



This subfamily is distinguished from the CladiiKz by the distinctly 

 petiolated lanceolate cell, the anal vein being always absent at base ; 

 the second submarginal cell, or- the first if the first transverse cubitus is 

 wanting, always receives both recurrent nervures, or the second recurrent 

 is interstitial with the second transverse cubitus. 



About a dozen genera are known, readily distinguished by the aid of 

 the following table : 



Table of Genera. 



Costal transverse nervure interstitial with the apex of the basal nervure or 

 placed a little beyond it 10. 



Costal transYerse nervure never interstitial with the apex of the basal 

 nervure, always placed somewhat before it. 



Claws bifid or cleft c. 



