320 Occasional I'apcrs Bcniicc f. Bisliof> Mnseiiin 



parallel; second minute; third elongate, cylindrical, expandins^ very feebly 

 and evenly to distal portion ; fourth elongate ovate, nearly or quite as 

 long as tliird; succeeding joints elongate spindle-shaped, increasing very 

 slightly in length but decreasing appreciably in width distad and very 

 small at intersections. ( In most specimens tlie longest joints are three 

 or even four times as long as broad.) 



Pronotum shining, very minutely imprcsso-punctulate, tliese punclula- 

 tions being the sockets of minute hairs," except in convex prozonal por- 

 tion where these are much fewer and weaker, supplied latero-cephalad 

 with a few delicate bristles ; length appreciably greater than width ; lateral 

 margins diverging very slightly caudad, rounding broadly into the very 

 feebly convex, nearly transverse, caudal margin ; surface of prozonal 

 portion moderately convex, with a feeble medio-longitudinal linear sulcus 

 and a weak or obsolete impression on each side. 



Tegmina appreciably less than twice as long as pronotum, with 

 apices straight, truncate, transverse ; surface sliining, very minutely im- 

 presso-punctulate, the punctulations being the sockets of minute hairs." 

 Exposed tips of wings about one-fourth (averaging this in the series, 

 rarely one-third) as long as tegmina and similarly hairy. Abdomen with 

 dorsal surface shining, supplied with even finer hairs, glands subobsolete ; 

 distal tergite with caudal margin very weakly and broadly obtuse-angulate 

 convex above inner portion of each cereal shaft, surface feebly impressed 

 meso-caudad.'' Lateral portion of abdomen with a scattered supply of 

 delicate bristles, ventral surface as hirsute as dorsal and lateral portions. 

 Penultimate sternite with caudal margin broadly convex laterad and 

 broadly concave mesad. 



Pygidium strongly declivent, then flattened out into a large horizontal 

 plate with lateral margins broadly concave divergent to blunt points, which 

 are situated slightly beyond the middle, then broadly concave and conver- 

 gent to an equal degree to the small, sharply rounded distal apices, between 

 which the distal margin is deeply and roundly emarginate. Forceps mod- 

 erately elongate, hairy proximad, with many delicate bristles in other por- 

 tions ; straight proximad, flattened internally and weakly dorsad, from this 

 portion showing a very slight inward curvature to the strongly incurved 

 immediate apices, the distal portion strongly flattened oval in cross-section ; 

 slightly beyond the pygidiiun a ventro-internal flange commences, widening 

 gently and evenly and terminating at end of proximal three-fifths in a mod- 

 erately large acute-angulate toot'n, directed vcntro-mesad. 



Limbs as described for piUconiis, except that tlie metatarsus is slightly 



" The hairy covering of this species is not so dense and the iiairs 

 are decidedly finer in proportion to the l)ody bulk tlian in /.. l^iliconiis, 

 (Motschulsky). 



'^ See footnote 17. 



'" The greater specialization of this tergite in females of dubronyi 

 is an unusual occurence in the Dermaptera, the male sex showing the 

 greater specialization in most of the species of the order. 



[18] 



