BY THOMAS G. SLOANE. 643 



placed fine punctures, one on each side ; the space between the 

 outer costa and lateral margin thickly set with coarse punctures in 

 rows (about five rows). Prosternum punctate, the episterna smooth, 

 shining. Mesosternura, metasternum, coxae and trochanters 

 punctate. Segments of abdomen shining, thinly punctate in middle, 

 the sides and apex thickly set with fine setigerous punctures ; 

 apex of abdomen projecting beyond elytra. 



Length 23-28, breadth 8-lOi^ mm. 



iTaft.— Darling River, N.S.W. 



This fine species is very distinct from II. costatus, being a larger 

 and much broader insect ; it can be distinguished at once by its 

 broader and less parallel elytra much more coarsely punctate and 

 without any reddish hairs along the striae. The episterna of the 

 prothorax too are smooth, while in H. costatus they are punctate. 



This species was first sent from Walgett by Mr. Rose last 

 April ; since then Mr. R. Helms, when collecting in June on the 

 Darling for the Australian Museum during the disastrous Darling 

 floods, got about 1 500 specimens along that river between Bourke 

 and Wilcannia. 



CaSNONIA RIVERINiE, n.sp. 



Head black, globular, constricted behind, united to the pro- 

 thorax by a condyle, covered with scattered erect hairs ; eyes pro- 

 minent ; antennae black, 2nd joint short, 3rd and 4th cylindrical, 

 about equal in length, hardly longer than succeeding joints, these 

 rather depressed. Prothorax red, excepting the basal portion 

 bluish black, globular, about as long as broad (l^xl|:mm.), 

 basal part constricted, anterior part with scattered erect hairs ; a 

 lateral ridge on each side ; the median line visible, not impressed. 

 Elytra bluish green with a single broad reddish fascia on the 

 apical half, (the fascia arcuate behind and not reaching the sides of 

 the elytra), short, broad, about twice as broad as prothorax 

 (3 J X 2 J mm) ; base subtruncate, declivous, the shoulders rounded ; 

 apex broad, subsinuate, obliquely cut on each side to the tip ; basal 

 third and sides strongly punctato-striate ; apex punctatorugu- 

 lose ; 4 equidistant rows of erect sparsely placed hairs extending 



