340 



Hah. — Western Australia: Ankertell, Lake Austin, Cue 

 (H. W. Brown). Type, I. 5386. 



A very fine species, taken in abundance by Mr. Brown. 

 In the 1906 < 19 ) table of the genus it would be associated with 

 colossus, but it is not at all close in appearance to that species, 

 and in neither sex are the third and fifth interstices carinate. 

 Jt is readily distinguished from areolatns by the abruptly 

 terminated rostral carinae and highly-polished abdomen ; the 

 latter character is rare, but not unique in the genus. Owing 

 to the rows of granules on the elytra and to the four linear 

 elevations on the prothorax the clothing on some specimens 

 has a vaguely striped appearance. The prothorax by actual 

 measurement at its widest part is slightly wider than long, 

 but to the naked eye it appears to be slightly longer than 

 wide; it has a wide median excavation, bounded by vermicu- 

 late elevations, meeting in front but not behind ; along the 

 middle there is usually a narrow irregular carina, but this 

 is sometimes split up into two parts, and occasionally is absent, 

 the sides are bounded by irregular elevations consisting of 

 subconjoined granules and tubercles, on each side of which 

 are numerous small polished tubercles. The row of tubercles 

 on *the third interstice is much more conspicuous than the 

 others (although the tubercle at the junction of the fifth and 

 seventh rows is the largest of all), the seventh row commences 

 with a small subcorneal one on the shoulder, the fifth com- 

 mences some distance from the base. Seen directly from 

 behind, the major portion of the apical slope is bounded by 

 the six largest tubercles — two on the third interstices 

 (approaching but not meeting on the suture), two at the 

 junctions of the fifth and seventh interstices, and two where 

 these connect with the third (near the apex) ; similar tubercles 

 are on several of the other large species, but all of these have 

 the abdomen very different. Between the middle coxae there 

 are two processes, ( 20 > a short one attached to the metasternum 

 and a longer sloping one forming part of the metasternum 

 (these are quite readily seen to be separate processes, and 

 although they do not appear to have been previously com- 

 mented upon, are present, although not always exactly the 

 same, on every species of the genus, although usually obscured 

 by the clothing), the semi-double tubercle behind the front 

 coxae is present on some others of the large species; the front 

 of the prosternum is widely excavated for the reception of the 

 base of the head. 



(19) Ann. Soc. Ent. Beige, pp. 314-316. 



(20) Those do not come out very clearly on fig. 8(i. 



