134 
it. The type of A. arnhevmensis is in the Howitt Collection, 
where I have seen it, and so know it to bea species of Rhytis- 
ternus, of narrow shape, with the prothorax cordiforn and sinuate 
before the basal angles.* 
PHORTICOSOMUS GRANDIS, Casteln. 
Several specimens of a Phorticosomus, which seems certainly 
Ph. grandis, Casteln., were obtained by Mr. Zietz; one of these is 
before me, from which I make the following notes as supple- 
mentary to de Castelnau’s brief description. 
Brown. Prothorax broader than long (4°6 x 5-6 mm.), sub- 
cordate, truncate on base, a little wider across apex (5'2 mm.) 
than base (5 mm.); sides lightly sinuate before basal angles ; 
anterior angles projecting ; basal angles rectangular, and decidedly 
marked. Elytra lightly striate; the interstices flat; base trun- 
cate; humeral angles not marked ; basal border hardly arcuate 
on posterior margin from fourth stria to humeral angle; ab- 
breviated stria at base of second interstice very short, punctiform. 
Length, 18; breadth, 7 mm. 
HYPHARPAX HABITANS, 1. sp. 
Male. Narrow, parallel, depressed; prothorax rounded on 
sides, posterior angles widely rounded, base and apex of equal 
width (1:5 mm.); elytra deeply striate, interstices without a 
striole at base of second or a puncture on apical part of third; 
prosternum punctulate before coxe. 
Black, shining ; undersurface and femora piceous-black ; tibize 
piceous-brown ; antennz, palpi, and labrum light-brown. Head 
small; mandibles inconspicuous, hidden by labrum; front with 
a narrow short oblique impression on each side extending back- 
ward towards middle of eye; these impressions connected by the 
well marked clypeal suture; eyes convex, not very prominent. 
Antenne long. Labrum quadrate ; anterior margin emarginate. 
Prothorax smooth, subrotundate, lightly transverse(1:8 x 2-2 mm.), 
widest a little before the middle, depressed on disc, strongly 
declivous on sides anteriorly; sides rounded, the curvature ex- 
tending to the peduncle posteriorly; anterior margin widely and 
lightly emarginate; base truncate across peduncle; anterior 
angles obtuse, not marked; basal angles not marked ; border 
narrow, extending along the base; marginal channel very 
narrow; a wide round well-defined impression (punctate at 
*T believe Mr. Waterhouse, who collected R. arnheimensis, obtained it 
when with one of the early transcontinental exploring expeditions ; if so, 
the locality, Arnheim’s Land, may be erroneous. 
