197 



death science lost a most assiduous student) his collection 

 fell into decay, and the specimen of H. f rat emus has dis- 

 appeared. In my own collection there is a specimen from 

 the same locality as the type (Port Lincoln) which I com- 

 pared many years ago with the type and labelled "apparently 

 H. fraternus abraded." It must be noted that there is a 

 doubt whether this species was rightly associated in the same 

 aggregate as jubatus, Blackb. (where I then placed it), as 1 

 had not then observed the peculiar sexual characteristics com- 

 mon to jubatus and its allies. If the type was a female (as 

 my abraded specimen seems to be) it is probable that the dis- 

 covery of the male would confirm the association of the species 

 with jubatus, but if the type was a male the species would 

 probably have to be removed from the aggregate A to AA, in 

 which case it would stand beside H. waterhousei, Blackb., 

 differing from it by, inter alia, the very much closer punctura- 

 tion of its pronotum. 



H. pubescens, Macl. For this nom. prceoce (previously 

 used by Erichson, Weigm. Arch., 1842, I., p. 164) I pro- 

 pose the name Erichsoni. 



H. Sydney anus, Blackb. In the original description of 

 this species (Proc. Linn. Soc, N.S.W., 1890, p. 559) it was 

 referred to the aggregate that is now Group VIII., with a 

 note on the middle lobe of the trilobed outline of its head 

 not forming a convex curve. As the Groups are charac- 

 terized in this present Revision that character removes the 

 species from Group VIII. to Group IV., where it will be 

 found placed in the second subgroup. I accidentally omitted 

 mention of this matter under the heading of Group IV. 



H. vagans, Blackb. When I described this species I re- 

 ferred to it some specimens from Queensland which, however, 

 I am now satisfied represent a distinct species. H. vagans 

 and its allies are among the most difficult of the Australian 

 TIeteronyces, there appearing to be at least five species so 

 .closely allied that they could not be satisfactorily treated 

 without the comparison of quite fresh well-mounted specimens, 

 whereas of two of them the specimens before me are by no 

 means in good condition. H . vagans I have not seen from 

 any locality north of the Sydney district (the type is from 

 Albury). It differs from the others of the aggregate, especi- 

 ally by, in combination, its prothorax considerably narrowed 

 in front and the 3rd joint of its antennae conspicuously more 

 elongate. From the Tweed River I have received a species 

 (which I describe as H. Olliffi), differing from the others by 

 its almost black colour and its remarkably quadriform pro- 

 thorax (the width of which across the point where the middle 

 line meets the front margin is not appreciably less than across 



