BY ARTHUR M. LEA. 455 



Metnsternum with a conspicuous median keel, commencing 

 at the middle and overhanging the base of the abdomen like 

 a conical tnbercle. Ahdomen scarcely flattened along middle 

 of iinder-siirface. Front frochantrrs with a small, acute 

 tooth. Length, 3 mm. 



l/r/b.—S. Australia: Adelaide (H. H. D. Griffith). 



Readily distinguished from the two previously described 

 species, by tlie metasternal keel. In size and general appear- 

 ance, it is remarkably close to the male of //. (niriroii)iix, but 

 the basal impressions of the elytra are larger. On the type, 

 on the upper surface of its abdomen, on the second (appar- 

 ently the first) segment, there is a very narrow longitudinal 

 carina, but as it is slightly oblique and not exactly median, it 

 may not be typical. 



Hamotopsis Australasl-e Raffr. 



Only the female of this species has been described. There 

 arc two males, irom Gayndah and Wide Bay, before me, that 

 appear to belong to the species. They differ from the female 

 in having the front trochanters armed with a small and 

 moderately acute tooth, and the front femora with an obtuse 

 but distinct subbasal tooth. The abdomen is flattened along 

 the under-surface, and appears to have small irregular impres- 

 sions.* 



The male is readily distinguished from the male of //. auri- 

 comus by the femoral tooth : the tooth of the trochanter is 

 also less acute and more depressed, and the front tibiae are 

 without a small apical spur. 



Schistodactylus brevipennis Lea. 



Dr. Ferguson has a specimen of this species from the Bhie 

 Mountains, N.S.W. 



* One of the specimens is without its jihdomen; and that of the other is 

 very dirty, and I luive not l)een able to clean it so as to see the sculpt, tire 

 clearly. 



