520 



Var. ( ■ ). — There are also in the Museum seven specimens 

 from the Warren River (Western Australia) that appear to 

 belong to the species, but of these only one has the head and 

 prothorax darker than the elytra, but its metasternum is not 

 also dark ; they all have the elytral punctures in irregular 

 double rows, and a few are confluent, so that they appear like 

 single, transverse, angular punctures, on the co-type this is 

 more pronounced, so that they are much coarser and in 

 irregular single rows. On the Warren River specimens also 

 the elytral setae, over most of the surface, appear to be in 

 quite regular double rows, but on the co-type these are less 

 conspicuous. All eight specimens have a long hair on each 

 shoulder. 



Caulobius caviceps, n. sp. 

 PL xxxvii., figs. 108 and 151. 



Of a rather dingy-castaneous ; antennae paler, parts of 

 legs infuscated. Clothed with semi-decumbent, stramineous 

 setae, on the elytra seriate in arrangement; four basal joints 

 of each tarsus fasciculate on lower-surface. 



Read with rather dense, asperate punctures; clypeus 

 rather long, apex lightly incurved to middle, sides moderately 

 curved and increasing in width to base, where each forms 

 an ocular canthus. Club elongate. Prothora,r not twice as 

 wide as long, apex rather strongly incurved to middle, sides 

 subangulate in middle, base bisinuate ; granulate-punctate, 

 the punctures as dense as on clypeus. Elytra feebly dilated 

 to about middle, with geminate rows of asperate, setiferous 

 punctures. Front tibiae strongly bidentate at and near apex, 

 and with a small basal tooth; tarsi elongate. Length, 8 mm. 



Rah.— Western Australia: Beverley (E. F. du Boulay). 

 Type (unique), I. 7966. 



In general appearance like a small specimen of Ater- 

 monocheila lonr/ipes, but with the curious front tibiae of 

 Caulobius and Automolus. Of the known species of Caulobius 

 it is nearer to punctulatus than to any other ; but it differs in 

 being larger, wider, and the clypeus longer, with its vertical 

 front face not triangularly dividing the mentum into two 

 lobes. Three interstices on each elytron are slightly elevated 

 and glabrous, being thus rendered rather distinct ; on the 

 head the setae are rather dense between the eyes, becoming 

 sparser on clypeus, except that the hind wall of the front 

 elevation is rather densely clothed with short setae. The 

 lateral and front margins of the clypeus are rather strongly 

 elevated, rendering the front part of the head conspicuously 

 concave. The type is probably a male, and the peculiar 

 clothing of the tarsi (suggestive of Ocnodus), is possibly a 

 masculine feature. 



