343 



ones and two considerably narrower lateral ones ; on the 

 female it usually appears to be divided into six longitudinal 

 spaces. To the naked eye the extreme length of the pro- 

 thorax appears to be considerably more than its extreme 

 width, but their measurements are exactly the same. The 

 suture has always tw T o conjoined conical tubercles near summit 

 of apical slope, but they vary considerably in size; there are 

 usually also numerous smaller tubercles or granules on the 

 suture towards the base ; the tubercles are larger on the 

 third, fifth, and seventh interstices than on the others, but 

 on the basal half are small, although sometimes acute; about 

 the summit of the apical slope, however, they are decidedly 

 larger and very acute ; on the second, fourth, and sixth inter- 

 stices the tubercles are sometimes numerous and conical or 

 subcorneal, but on many specimens they appear as rounded 

 knobs, or as slight undulations; the eighth and ninth inter- 

 stices are also sometimes supplied with a few small tubercles 

 on the basal half. As with nitidiventris, the major portion 

 of the apical slope is bounded by six of the largest tubercles 

 on the elytra, but, in addition, on this species there are the 

 sutural ones, and sometimes two smaller ones adjacent to them 

 on the slope itself. 



Leptops nitidicollis, n. sp. 

 PI. xxxix., figs. 149 and 150. 



Black. Clothed with light-brown scales and stiff setae. 



Head with inter-ocular fovea very small. Rostrum stout, 

 sculpture less deeply impressed than usual. Antennae rather 

 short. Prothorax moderately transverse, comparatively 

 smooth and shining, with a conspicuous median line ; towards 

 the sides vermiculately impressed, with small scattered punc- 

 tures. Elytra subovate, with irregular subgeminate rows of 

 punctures, suture with two small conjoined tubercles near 

 summit of apical slope; third, fifth, and seventh interstices 

 carinate and then tuberculate. Frost em inn obtusely armed 

 in front. Abdomen highly polished. Legs moderately long; 

 tibiae not visibly denticulate. Length, 22-24 mm. 



Hah. — Western Australia: (Blackburn's Collection), 

 Killerberrin (C. French). Type, I. 5501. 



There are three specimens, apparently females, before 

 me. Their elytra are exactly as on many specimens of 

 interioris, but the prothorax is very different, being (except 

 for certain impressed lines) smooth, shining, and without 

 granules or tubercles. The pectoral armature is obtuse, but 

 the species is so obviously a member of the group with the 

 breast armed that it should certainly be placed in that group; 

 regarding it as such, it would, in the 1906 table, be associated 



