185 



line of the head is not divided, the middle lobe not projecting 

 nearly so far as the lateral lobes. 



New South Wales; Queanbeyan (Mr. Lea). 



Group VIII. 



The division of the aggregate A A in this Group into two 

 aggregates distinguished by the length of the hind coxae is 

 not quite so easy of application as the corresponding division 

 in the other Groups, owing to the presence of a few species 

 (mostly of abnormally elongate form), in which the hind coxae 

 do not quite fit any formula that is satisfactory in respect of 

 the other species. Some remarks on these two aggregates (B 

 and BB) of the aggregate A A, therefore, seem necessary. The 

 normal condition of species of B is : hind coxae as long (or all 

 but as long) as the metasternum, at any rate very much 

 nearer to the length of the metasternum than to that of the 

 2nd ventral segment, covering the 1st ventral segment (i.e., 

 that which is very narrowly visible between the hind trochan- 

 ters as ap23arently the 1st ventral segment), or exposing only 

 a very narrow strip of it (much narrower than half of the 

 next segment). There are a few species which differ from the 

 normal only in the exposure of an exceptionally wide strip of 

 the 1st ventral segment, and these will present no difficulty, as 

 they quite obviously belong to the aggregate with long hind 

 coxae. There is, however, one small aggregate which I have 

 placed in B that undoubtedly seems to hover between B and 

 BB. The species composing it are of more or less notably 

 elongate form, the elongation being especially conspicuous in 

 the ventral segments. The 1st ventral segment is widely ex- 

 posed in them all, and in two of them (longulus and tubricus) 

 the hind coxae are very decidedly shorter than the meta- 

 sternum, and, in fact, somewhat intermediate in length 

 between the metasternum and the unusually elongate 2nd 

 ventral segment — indeed, in lubricus they seem to be a trifle 

 more nearly equal to the latter in length than to the meta- 

 sternum. I think, however, that wherever they be placed 

 they must be associated together, and as the three of them 

 not already mentioned by name (pallidulus, Macl., flavus, 

 Blackb., and angustus, Blackb.) have hind coxae scarcely or 

 very little shorter than the metasternum, and, therefore, 

 would be much more out of place in BB than longulus and 

 lubricus in B, it seems necessary to place them all in the 

 aggregate B. They are easily recognizable species, having two 

 characters which are unusual (especially in combination), 

 viz., the outline of the eye slightly passing, or, at any rate, 

 fully reaching, that of the clypeus laterally; and the apex 



