Broun. — Revision of the New Zealand CossonidiP. 



155 



Fam. COSSONID.E. 



Group Pentarthrides. 

 Funiculus .5-articulate, 



Pentarthrum, Wollaston, Trans. Ent. See, 1873. 



Body convex, cylindric or fusiform-cylindric, subnitid, piceous or cas- 

 taneous, subglabrous. 



Head globose below ; occiput usually smooth and narrowed anteriorly, 

 thus causing the e)^es to appear more prominent behind than they would be 

 otherwise ; there is no frontal line of demarcation. Thorax rather longer 

 than broad, triangular-ovate, constricted in front. Scutellum distinct. 

 Elytra subtruncate at base, as wide as thorax, subparallel, or gradually 

 narrowed posteriorly, their margins not incrassate near the extremity ; 

 apices singly rounded sometimes. 



Femora moderately long, dilated, emarginate below near the extremity. 

 Tibiae flexuous, expanded towards the apex, with well-developed terminal 

 hooks. Tarsi pseud otetramerous, 3rd joint slightly expanded, cordate, 

 excavate above but not lobate, the terminal equals the preceding 3, with 

 distinct claws. 



Metasternum elongate, rather longer than basal 2 segments combined, 

 2nd ventral segment shorter than the basal, their suture sinuate and very 

 fine or indistinct, both on the same plane as the metasternum ; 3rd and 

 4th abbreviated, with profnmid sutures. Epipleur.T linonr. Coxn? widely 

 separated, the anterior included. 



