224 



and with a conspicuous enlargement of the median line ; the 

 largest is less than the length noted for ponder osa. The 

 coarse punctures are often confluent on the sides near the 

 shoulders. The elytra of this and of the following species 

 (except for marginal fringes) at first glance appear to be 

 glabrous, but they have sparse and exceedingly short pubes- 

 cence, that even under a strong lens appears hardly more than 

 dust. 



Variety. One specimen has the front tibiae bidentate; 

 but agrees in other respects with the type and seven other 

 specimens. 



Byrrhomorpha basicollis, n. sp. 



Black; most of under-surface, and of legs, labrum, and 

 sides of clypeus, obscurely reddish-brown, antennae paler. 

 Parts of under-surface and of legs with rather long, yellowish 

 hairs or bristles. 



Head with crowded and small but sharply-defined punc- 

 tures. Prothorax with crowded, small, and rather shallow, 

 but sharply-defined punctures, frequently transversely or 

 obliquely confluent. Elytra with punctures of moderate size, 

 but (except at the apex where they are smaller and denser) 

 not crowded or confluent. Pygidium with very dense and 

 small asperate punctures, with a very feeble median line. 

 Front tibiae tridentate, the two front teeth large and acute, 

 the other very small. Length, 9-10 mm. 



Hab. — South Australia: Lucindale (B. A. Feuerheerdt 

 and F. Seeker), Sandy Creek (J. G. O. Tepper). Type, I 4837. 



The under-surface is sometimes uniformly dull reddish- 

 brown ; on two specimens the abdomen is almost black, and 

 darker than the sterna, on another it is considerably paler 

 than the sterna. On the head of one specimen there is a 

 very conspicuous, narrow, impunctate line near the base ; but 

 this appears to be due to less of its back part being con- 

 cealed by the apex of the prothorax than in the others. The, 

 subsutural and sublateral striae of the elytra are in parts 

 fairly well defined, but there are no distinct discal striae, their 

 places being taken by obscure and subgeminate rows of punc- 

 tures, scarcely differing in size from those in their vicinity. 

 There is an enlargement of the median line of the pronotum, 

 as in the preceding species, but the punctures of the prothorax 

 and elytra are very much finer than on that species; the 

 clypeus (except that its punctures are smaller), labrum, 

 mentum, outlines of prothorax and of elytra, and the scutel- 

 lum are as described in that species. From re r res it is readily 

 distinguished by the much denser and finer punctures of the 

 prothorax, which are also frequently confluent ; the sculpture 



