NEUROCTENUS. 107 
é'. Antenne with joint 1 not longer than the apical process of the head, 
3 and 4 subequal ; sixth connexival segment (3) with a transverse 
fold . 2. 1. 1. 2 ew ee we we ew ww we we ee .) trigonus, Bergr. 
6. Body ovate or oblong in both sexes. 
c’. Antenne with joint 1 longer than the apical process of the head ; 
sixth connexival segment (¢) without fold. 
a", Pronotum sinuate at the sides. 
a". Apical process of the head subconical; antenne long and . 
rather slender: body broad-ovate, very depressed . . . . . dilutatus, Bergr. 
b'’, Apical process of the head subparallel or slightly widening 
forwards. . 
a*, Body broad-ovate, somewhat coarsely sculptured; antenne 
rather slender; venter moderately convex. . . . . . ovatus, Stal. ” 
b*. Body narrower, ovate or oblong. 
a’. Sculpture moderately coarse: length 7-9 mm. 
a’, Antenne stout: form moreelongate . . . . .. « “*terginus, Stal. 
b°. Antenne more slender: form less elongate . . . . . Uitigiosus, Stal. 
6°. Sculpture fine: length 6-7 mm. . ..... . . ~ punctulatus, Burm. 
6". Pronotum not or scarcely sinuate at the sides. 
c’’, Sculpture fine; body very depressed, ferruginous: length 
5-5bimm.... wee ee eee ee papyrinus, Bergr. 
ad", Sculpture moderately coarse ; antenne short and very stout, 
joint 1 longer than 2; body broad: length 8 mm. . . . . *distanti, Bergr. 
e’, Sculpture very coarse ; antenne short and very stout, joints 1 
and 2 equal in length; body broad: length 7-8 mm. . . . niger, Bergr. 
d’, Antenne with joint 1 not or very little longer than the apical process 
of the head; the apical process subparallel or subconical; pronotum 
sinuate at the sides. 
ce’. Body (¢ ¢) ovate. 
f'. Sixth connexival segment (3) with a prominent fold. . . . mewicanus, n. sp. 
g’". Sixth connexival segment ( ¢) without fold. 
c'. Antenne with joints 1-3 increasing in length: body broad; | 
terminal genital segment (?) not notched at the tip . . . amplus, n. sp. 
— d*, Antenne with joints 1-3 subequal in length: body rather 
narrow; terminal genital segment (¢) deeply notched at 
the tip 2. 6. 6 6 we ee ee ee et 
a". Body (9?) narrow, subparallel ; antenne short and stout, joints 
1-3 subequal in length, 4 longer than 3; venter rather convex . *subparailelus, n. sp. 
uhleri, Bergr. 
1. Neuroctenus bergrothi, n. sp. (Tab. VII. figg. 12, ¢; 124, terminal 
genital segment in profile, drawn out; 13, 2, from beneath.) 
Elongate, broad, depressed, subtriangular (¢), ovate (9), black, the venter and the apical margins of the 
connexival segments sometimes piceous, the tarsi piceous or obscure ferruginous, the membrane with two 
* The males of these species are unknown or undescribed. 
14* 
