Genera and Species of Coleoptera. 43 
I have generally avoided entering into details of these organs in the 
generic characters, reserving them for the species which alone has 
been examined. If I have correctly recognized the sexes, there 
appears to be little difference between them, at least in the species 
described below. This Tenebrionid is not rare in collections: Pro- 
fessor Westwood informs me that it stands in the Oxford Museum as 
Dendroblaps Westwood (Macleay). This name has not been pub- 
lished, I believe ; and as there is a Dendroblax among the Lucanide, 
I have retained the generic name under which it has always stood 
in my cabinet. 
Achthosus Westwoodii. (Pl. II. fig. 7.) 
A, niger, nitidus; clypeo recurvato; prothorace antice excavato, margine 
supra trisinuato. 
Hab. Australia. 
Subcylindrical, deep black, shining; head a little dilated anteriorly, 
narrowed behind the eyes, where it forms a thick neck, the front 
slightly concave and somewhat finely punctured, the clypeus pro- 
duced and slightly recurved ; epistome very distinct, subquadrate, the 
lip obsolete ; antennze with the five or six last joints perfoliate, trans- 
verse, and considerably broader than the others; mentum stout and 
irregular, but with six nearly equal sides; labrum somewhat cordate, 
its palpi inserted in a cavity which is hollowed out on each side at its 
base; last joint of the maxillary palpi shortly triangular, of the labial 
obliquely ovate; prothorax slightly broader than long, strongly exca- 
vated anteriorly, and this part only thickly punctured, the border of the 
excavation posteriorly strongly marked and having a trisinuate out- 
line; scutellum cordate-triangular; elytra parallel, coarsely punctate- 
striate, the intervals broad and nearly impunctate ; body beneath black, 
shining ; antennze and legs chestnut; anterior and intermediate tibize 
strongly serrated externally, the posterior only very slightly so, all 
terminated by two or three stout spines; tarsi narrow, the claw-joit 
as long as the rest together. Length 10 lines. 
Srroneyiium [Tenebrionide |. 
Kirby, Trans. Linn. Soe. xii. p. 417. 
Strongylium Macleayi. 
S. nigro-chalybeatum, nitidum; prothorace transverso, antice rotundato, 
basi angustiore; scutello nigro-cupreo; elytris subelongatis, seriato- 
punctatis, lateribus parallelis. 
Hab. New South Wales. 
Dark chalybeate blue, shining ; head finely punctured; eyes nearly 
contiguous above; epistome and lip bordered with testaceous; an- 
tennze about half the length of the elytra, the third joint much longer 
than the first and second together, the fourth and fifth gradually 
