BY ARTHUR M. LEA. 
241 
exact middle of the sides; antennae inserted close to apex, equi- 
distant at their bases with the front of the eyes, 1st joint slightly 
longer than 2nd-3rd combined, 2nd a trifle longer than 3rd, 3rd- 
10th subequal, 11th not quite as long as 9th-10th combined. Pro- 
thorax slightly longer and narrower than head, subquadrate, base 
and apex feebly rounded, angles scarcely rounded, sides parallel; 
base narrowly margined. Scutellum small, broad. Elytra at base 
slightly wider than head, not once and a quarter as long as 
head and prothorax combined; shoulders rounded, sides gradually 
widening and narrowly margined from about the basal fourth, 
each separately rounded. Legs slender, posterior tibiae feebly 
bent, two short thin spurs at their apices, the other tibiae with 
very short spurs. Length to apex of elytra 1J, of abdomen 2 J; 
width § mm. 
Q. Differs in having the head almost concolorous, with two 
shallow impressions in front — a feeble carina separating them, — 
and by having shorter antennae. 
Hob. — Galston (Dumbrell and Lea). 
Helcogaster parallelus, n.sp. 
9. Very elongate, subparallel, flat, shining. Black; base of 
antennae and knees feebly diluted with red. Above and sides of 
abdomen with sparse and rather long black hairs. Almost im- 
punctate. 
Head longer than wide, feebly depressed in the middle, a feeble 
elevation on each side in front, feebly corrugated at base, sides 
and undersurface ; fovese of undersurface deep, longitudinal, 
narrowest and approximating in front; antennae slender, reaching 
posterior coxae. Prothorax distinctly longer than wide, scarcely 
the width of head across eyes, feebly constricted towards base; a 
broad and rather sudden impression near base. Elytra very little 
longer than head and prothorax combined, but distinctly wider; 
sides gradually increasing to apex, each feebly separately rounded. 
Length to apex of elytra 2, of abdomen 3f ; width i mm. 
Hab.— King George's Sound, W.A. (Mr. G. Masters). 
