Aiistralian and Tasmanian Malacodermidae. 217 



qc[. Median sinus wider 

 than the lateral 

 ones. 

 r. Median sinus 



feebly curved . decipiens, n. sp. 

 7T. Median sinns 



strongly curved tropicus, n. sp. 

 PF. Excavation not trisinuate 

 posteriorly. 

 G. Excavations longitudinal 

 and basal as well as 



median suhicejjs, n. sp. 



GG, Excavations transverse, 



or more or less 



rounded. 



H. Head longitudinally as 



well as obliquely 



strigose stricjiceps, n. sp. 



HH. Head transversely or 

 not at all strigose. 



I. Head entirely dark . insularis, n. sp. 



II. Head entirely pale . major, Lea. 



III. Head partly dark. 

 J. Antennae pale at 



base and apex . foveiceps, Lea. 

 JJ. Antennae pale 

 only at base. 

 K. Elytra entirely 



dark . . . concaviceps, Lea. 

 KK. Elytra dark 



only at apex rhyticeplialus, n. sp. 



Helcogaster brachypterus, Boh., Res. Engen., 1858 

 p. 82 ; Lea, P. L. S., N.S.W., 1895, p. 244. 



I find that I was mistaken in my previous identification 

 of this species, so that the remarks given in the above 

 reference would best be taken as unwritten. 



The species belongs to a group of which it is ahnost — 

 (in some species quite) — essential that the sex (not men- 

 tioned by Bohemann) should be stated. 



I have two distinct species which agree exactly with the 

 original description and a number of others which agree 



