86 



tuberculiform, the second last the largest, tubercles ending at 

 commencement of declivity ; fifth interstice with a row of 

 tubercles extending from humeral crests, which are outwardly 

 serrate, posteriorly and somewhat outwardly, the basal 

 tubercles small and granuliform, the last four or five stronger 

 and definitely tuberculiform ; sides with a moderately strong 

 infra-humeral spine. Ventral segments flat. Legs simple. 

 Dim. — 9*5 X 4 mm. 



Hah. — Western Australia: South Perth, Mundaring (H. 

 M. Giles), Gingin (H. J. Carter), Beverley (South Australian 

 Museum). Type in author's collection. 



Closely allied to A. polyacanthus, Pasc, under which 

 name it appears in most Australian collections. A specimen 

 was sent to Mr. Blair, who states- that it is labelled ''A. 

 muriceus, Pasc," in the British Museum. I cannot, however, 

 find any evidence of this name ever having been published. 

 Mr. Blair kindly sent the type of A. polyacanthus for 

 examination. Among other differences A. poly acanthus has 

 the elytral tubercles much larger and more spiniform. It is 

 possible that the two may be extreme forms of one species, but 

 I do not think so. Too much stress should not be laid on differ- 

 ences of tuberculation, but in this case the difference is decided, 

 and is supported by several minor differences. I think also 

 that more than one species are included under the allied 

 species, -4. ansfralis; the form in the Museum collection, how- 

 ever, appears to be typical. 



Melanegis halmaturina, n. sp. 



Small, elongate, subangulate at the sides posteriorly, much 

 produced apically. Black; rather sparsely covered with minute 

 dull-golden, subsquamose clothing ; the middle of the ventral 

 segments and the legs with golden subsetose pubescence. 



Eostrum moderately long and narrow ; the upper-surface 

 deeply grooved along the middle ; a strongly elevated ridge 

 along each side of median sulcus, more elevated and strongly 

 convex in profile posteriorly ; a faint groove along the outer 

 side of the posterior portion, probably indicating the separa- 

 tion between the internal and external ridges. Scrobes curved, 

 wide posteriorly, touching eyes. Head partly concealed 

 by the prothorax, small, convex. Eyes flat, elongate- 

 obovate, slightly compressed antero-posteriorly. Scape short, 

 moderately incrassate externally. Prothorax (1*75 x 1"75 mm.) 

 little widened, evenly rounded on sides, apical margin slightly 

 produced over the head ; ocular lobes moderately distinct ; 

 disc with a deep median longitudinal impression, and a more 

 irregular one towards each side ; the derm between the furrows 

 raised into a strong ridge on each side, the lateral margins also 



