CTENACME. 335 



Genus CTENACME, Fdrst. 



Ctenacme, Forster, Verb. pr. Rheinl. 1868, p. 196. 



Ctenacmw, Thomson, Opusc. Ent. ix, 1883, p. 901. 



Pauroctemis, Cameron, Joiu-n. Bombay Nat. Hist. Soc. 1909, p. 726. 



GENOTYPE, Polyblastus scutellatus, Thorns. 



Head with the clypeus distinctly discrete from the face, with 

 its lateral foveae not scopulate ; mandibles glabrous, convex discally 

 at the base and narrowed towards the apex. Antennae no't 

 centrally incrassate. Epicnemia interrupted above. Abdomen 

 sessile, with the central segments not red ; first segment somewhat 

 short, basally subauriculate and often transversely impressed before 

 its apex; terebra not entirely concealed ; hypopygium large, 

 vomeriform, not retracted but broadly covering the base of the 

 terebra. Legs with the tarsi not incrassate, nor calcaria elongate ; 

 claws stout, closely and elongately pectinate. Areolet sometimes 

 wanting ; basal nervure vertically curved and divergent. 



Range. North- West Europe, Himalayas. 



An examination of the type of Cameron's genus convinces me 

 that this differs in no material degree from Forster's as enunciated 

 by Thomson, though belonging to none of the three Swedish 

 species described by the latter, which are the only ones at present 

 brought forward. Cameron tells us, " the affinities of tbis genus 

 \Pauroctenus~\ may be left over until the $ is known. It comes 

 near PolyUastus in the tables given by authors." Unfortunately, 

 he mistook the sex of the type. 



239. Ctenacme pallidipes, Cam. (emend.). 



Pawoctenus pallipes, Cameron,* Journ. Bombay Nat. Hist. Soc. 

 1909, p. 727 ($,as rf). 



2 . A black species, with the legs, venter and mouth flavescent. 

 Head as broad as the thorax and gradually rounded behind the 

 internally parallel eyes ; vertex not broad, somewhat convex and, 

 like the deplanate frons, very finely punctate; face more distinctly 

 punctate, black, shining and centrally prominent, with distinct 

 juxta-antennal foveae; clypeus triangular, subglabrous and stra- 

 mineous, with a conspicuous black basal tubercle, its apex rounded 

 and narrowly reflexed ; mandibles stout and stramineous, with 

 tbeir bifid apices rufescent ; ligula and palpi stramineous. 

 Antenna filiform, not stout, black, with their apices ferruginous 

 beneath, and the flagellar joints slightly compressed beyond the 

 centre. Thorax immaculate black ; mesonotum shining and 

 obsoletely punctate, with obsolete notauli ; metathorax short and 

 somewbat small ; areola complete, parallel-sided and apically sub- 

 truncate, with the lateral areae trans-aciculate, costulae wanting 

 and petiolar area discrete ; apophyses small and obtuse, spiracles 

 circular and uot large. Scutellum normal and black. Abdomen 



