1912.] 149 



a. Eyes smaller and less prominent ; elytra only slightly longer than 

 thorax. Length, 1 — 1'4 mm minima, Er. 



b. Eyes larger and more prominent; elytra distinctly longer than 

 thorax. Length, I'o — 2 mm. 



a*. Elytra almost impunctate, except at postero - external 



angles poweri. Crotch. 



b*. Elytra rather closely punctiu-ed throughout... 



fasciata, Marsh. 

 2. — Thorax with two rows of punctures on each side of disc, or with 

 two large punctures near the base, sides quite or almost im- 

 punctate. 



A. — Elytra entirely punctured, more strongly and closely near 

 postero-external angles . 

 a Elytra rather strongly and rugosely pvinctured. 



a*. Colour lighter ; elytra very finely akitaceous between the 

 punctures ; 5th segment of hind body in J with two 

 small tubercles in centre, and a ridge on each side. 



Length, 2 — 2'5 mm gentilis, Er. 



b* Colour darker ; elytra smooth between the punctures ; 

 5th segment of hind body in <? with six ridges. Length, 



1'8 — 2"2 mm nana, Payk. 



b. Elytra finely and not rugosely punctured .fasciata, Marsh. 



B. — Elytra only punctured near postero-external angles. 

 a. Hind body black, 1st and 2nd segments sometimes pitchy. 



a*. Elytra and hind body scarcely punctured. Length, 



1 — 1'3 mm lucidula, Er. 



b*. Elytra and hind body distinctly punctured. Length, I'o — 



1"8 mm convexicollis, sp. n. 



h. Hind body with at least 1st and 2nd segments reddish-yellow. 



a*. Sides of thorax straight for hinder two-thirds ; antennae 

 slightly thicker and lighter ; thorax generally pitchy 

 black ; (? with 5th segment of hind body with six very 

 small round tubercles ; 6th segment notched at apex... 



Isevipennis, Kr. 

 b*. Sides of thorax slightly rounded ; antennae slightly narrower 

 and darker ; thorax generally pitchy red ; c? with 5th 

 segment of hind body with six short ridges, 6th segment 

 terminating in two long narrow processes... 



bihamata, Th. 



The new species may be described thus : — 



Gr. CONVEXICOLLIS, Sp. 11. 

 Broad, pitchy-black, elytra, except postero-external angles, rather obscurely 

 yellowish ; first two segments of hind body sometimes pitchy red ; antennae 

 yellow, fuscous at apex ; legs yellow. Pentdtimate joints of antennae distinctly 

 transverse ; thorax strongly transverse, more convex than in any of its allies, 

 with a more or less distinct row of punctures on each side of disc, or only one 

 large puncture on each side near base, sides impunctate ; elytra transverse, 

 alutaceous, diilusely but distinctly and rather deeply pimctiired at postero- 



