529 



was erroneous; in Blackburn's table it was placed in Group 

 19 (a group characterized by having the antennae seven- 

 jointed). The antennae, however, are nine-jointed, and the 

 two basal joints of the hind tarsi are equal or almost so (from 

 some directions the first appears to be slightly the longer, but 

 from others slightly the shorter). Regarding them as equal 

 the species should be referred to Group 7, and there asso- 

 ciated with gracili'pes, of which in fact it appears to be a 

 variety; it appears to be a female, with the tubercle on the 

 propygidium much more conspicuous than usual, and without 

 the "two short longitudinal furrows" upon which special 

 stress was laid in the original description (in long series of 

 gracilipes these furrows appear to be quite as often absent as 

 present, but the male of the species is very distinct by its 

 bifascieulate abdomen). 



LlPARETRUS PARVIDENS, Mad. 



On this species (a common one about Brisbane) the 

 pygidium and propygidium are more often black than dark- 

 red (as on the type). 



LlPARETRUS OBTUSIDENS, Mad. 



In Blackburn's table this species was associated with 

 parvidens as having the "f ront of clypeus feebly and obtusely 

 tridentate," but the teeth of the male, although much less 

 acute than on tridentatus, are quite conspicuous (much more 

 so than on the male of parvidens). The species occurs in 

 Victoria, as well as in New South Wales. 



LlPARETRUS ROTHEI, Blackb. 



The type of this species was not in the Blackburn 

 collection when I- examined the types, and was not listed as 

 being in the British Museum. There was, however, a 

 specimen in the Blackburn collection standing with a reversed 

 label < 15 ) that appears to belong to the species, and was from 

 the head of Yorke Peninsula; it is without the apical fringe 

 of the elytra of the type, but this appears to be a sexual 

 feature, as of eight specimens (taken on the Murray River by 

 Mr. F. R. Zietz) before me, three have a very conspicuous 

 fringe, while five are without one, as the three have the 

 abdomen considerably larger and more convex than the five, 

 the difference would appear to be sexual, the three being 

 females. The largest specimen is 4 mm. (the length of the 

 type), the smallest not quite 3 mm. At the time of its 

 description Blackburn was in doubt as to the number of 



(15) Signifying doubt, or to be looked into. 



