BY ARTHUR M. LEA. 243 



Basal segments of abdomen broad. Legs slender, tibia3 straight, 

 first tarsal joint large (externally minutely serrate), concealing 

 the second joint. Length to apex of elytra 2, of abdomen 3^; 

 width 4 mm. 



^. Differs in being broader, prothorax transverse, the head 

 with less red, and less rugosely sculptured, posterior femora 

 piceous, intermediate reddish on apical half only, anterior tibia^ 

 reddish-brown and with simple tarsi. 



Hah.— Galston. 



Helcogaster major, n.sp. 



^^. Rather robust, shining, slightly convex, parallel-sided. 

 Reddish-testaceous, apical joints of antenna slightly infuscate; 

 four posterior coxa3 and base of posterior femora infuscate; meso-, 

 metasternum and abdomen black; elytra black, with a faint 

 coppery-blue tinge. Above with sparse and rather long black 

 hairs, undersurface with short sparse pubescence. Elytra densely, 

 minutely, and very shallowly punctate. 



Head — excluding mandibles — transverse; anterior half deeply 

 excavated, the sides of the excavation near the eyes marked by a 

 raised tubercle, and in front and close to the antennae very s^lightly 

 raised, the head when viewed from behind appearing to possess 

 four short horns; feebly corrugated at base, sides and under- 

 surface; fovese of undersurface approximate, rather large, open 

 behind; antennae almost reaching apex of elj^tra, 2nd joint slightly 

 longer than 3rd, 5th-9th strongly serrate internally. Prothorax 

 strongly rounded, transverse, about the width of head, a feeble 

 depression at base and a still feebler interrupted one at apex. 

 Elytra not much longer than head and prothorax combined, at 

 base scarcely wider than head, very feebly increasing to apex, 

 each separately rounded. Basal joint of anterior tarsi large, a 

 black curved comb inwardly, a few sliort black set?e to posterior 

 tibiae. Length to apex of elytra 3 J, of abdomen b\; width Hmm. 



9. Differs in being less robust, with simple antennae, and tarsi 

 more obscurely coloured; the head longer, much more shallowly 

 depressed, with two shallow fovea?, and without elevations. 



Hah. — North West Australia (Macleay Museum). 

 Q 



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