BY THE REV. T. BLACKBURN. 817 



equal in size to those in the prothoracic series, followed by two 

 rows rather close together near the margin ; of these rows the 

 1st and 3rd are not continuous near the base, and all (especially 

 the lateral ones) are somewhat irregular through some of the 

 punctures being out of line. 



A single specimen of this very interesting insect has been sent 

 to me by Dr. Bovill, who took it near Palmerston, in the Northern 

 Territory of South Australia. 



H. Tepperi, sp.nov. 



Sat convexa; sat elongata; nitida; nigra, clypeo labroque antice 

 rufis; palpis, antennis (articulis ultimis exceptis), tarsis, non nullis 

 exemplisfemoribusetiam, rufescentibus ; supra subtiliter sat crebre 

 punctulata; capite prothorace et elytris punctis majoribus seriatim 

 positis (his capillos subtiles ferentibus) instructis ; subtus sub- 

 tiliter crebre punctulata, crebre breviter pubescens. 



[Long. 7 lines, lat. 3 lines. 



Decidedly more convex than the preceding, and much more 

 parallel-sided, the elytra being quite as wide a little behind the 

 middle as at the base ; the prothorax is not so strongly bisinuate 

 in front ; the punctu ration of that segment and of the head 

 scarcely differs from the same in Bovilli ; the sculpture of the 

 elytra is very different, as the rows of punctures intermediate in 

 size between the uniform surface punctures and the five rows of 

 much larger punctures are altogether wanting. In all other 

 respects the description of the former insect would apply to 

 this one. 



Palmerston, N.T. (Mr. J. P. Tepper) ; also Fam Creek, N.T. 

 (Prof. Tate). 



Hydrobius. 



According to Dr. Sharp (Trans. Ent. Soc, 1884) B. assimilis, 

 Hope, which was founded on a specimen from Port Essington, is a 

 common Australian species and is identical with II. Zealandicus, 

 Broun (from New Zealand). I am well acquainted with a common 

 and widely distributed (in Southern Australia) species that is 



