92 Mr. Arthur M. Lea's Revision of the 



This species varies considerably in size and markings. 

 The prothorax is sometimes pallid across the entire apex, 

 but usually the black is continuous to the extreme apex, 

 sometimes but very narrowly so, however. Sometimes the 

 elytra are entirely pallid except for a slight longitudinal 

 infuscation ; sometimes there is a distinct longitudinal 

 black patch, which affects the costae or not. Waterhouse 

 gives the size as from 4^- to G lines, the specimens before 

 me range from 4j to 7 lines. Both of the figures (97 in 

 Trans. Ent. Soc. and 7 in 111. Typ. Col.), given of the 

 prothorax are somewhat misleading. 



I regret to state that I have re-described the species 

 under two separate names — distindus * and aurihos ; of 

 these auritus may be regarded as representing the small 

 form common in northern New South Wales and Queens- 

 land, distindus at first really appears to be distinct, the 

 elytral costae being less sharply contrasted in thickness to 

 the normal form f ; the median costa of the basal trident 

 is hardly more distinct than the lateral ones, not (as in the 

 normal form) the only really distinct one of the three ; 

 whilst the punctures are more regular, transverse and 

 sharply defined. I am convinced now however that it is 

 deserving of varietal rank at most. 



Hub. Queensland : Moreton Bay, Brisbane, Mount 

 Tambourine ; N.S. Wales : Tweed, Richmond and Clarence 

 Rivers, Tenterfield, Dalmorton, Newcastle, National Park, 

 Sydney, Galston ; Victoria. 



Trichalus sulcatus, Wat., Trans. Ent. Soc. Loud., 1877, 

 p. S3, Pi. II, figs. 102-105 ; 111 Typ. Col, p. 68, PI. XVI, 



fig. 8. 



A specimen from Bowen in Mr. Simson's collection 

 agrees with the description of this species except that the 

 femora are tipped with black; it agrees also with the 

 figures given except that of the prothorax (101) in Trans. 

 Ent. Soc, but this was evidently wrong.J as the median 

 areolet appears as terminating a considerable distance from 

 the apex, whereas the prothorax is described as having "a 

 longitudinal impression reaching nearly from the base to 

 the apex." 



* Already commented upon by Mr. Blackburn. 

 t Mr. Blackburn relied on a somewhat similar character in one of 

 his species. 



J In the later figure it is correctly drawn. 



