BY ARTHUR M. LEA. 55 I 



strise, and the prothoracic groove ovate ; in this species the 

 enclosed space is ahnost parallel-sided, sul^truncate at base and 

 notched at apex. 



BOTHRIDERES INTERMEDIUS, n.sp. 



Shining all over ; reddish-brown, elytra, except the suture 

 -occasionally, and legs paler. 



Head coarsely punctate; clypeal suture moderately distinct, 

 Avith several very feeble longitudinal impressions. Prothorax 

 slightly longer than wide, apex considerably wider than base, 

 anterior angles prominent; densely and rather coarsely punctate; 

 disc with two distinct deep semicircular impressions, of which the 

 posterior opens out to base, the two feebly connected on each 

 side, the enclosed space less punctate at base and apex than in 

 middle. Elytra with the 3rd interstice feebly raised at base and 

 apex, flat elsewhere, 5th and 7th feebly raised and keel-like ; 

 stride narrow, punctures distinct only at sides and apex, suture 

 and 3rd interstice feebly punctate, 2nd with two or three minute 

 punctures. Under surface with prosternum moderately strongly 

 punctate, the punctures from thence decreasing in size and number 

 to penultimate segment of abdomen ; apical segment densely 

 punctate, feebly depressed in middle. Length 6, width 2; varia- 

 tion in length 4|-6J mm. 



Hah. — Swan River, W.A. 



This species may fairly be regarded as being intermediate 

 between those in which the prothorax has a deep channel isolating 

 a median space and those with an impression at each end. 



BOTHRIDERES USTULATUS, n.Sp. 



Shining ; red ; undersurface slightly darker; muzzle, elytral 

 suture and knees tinged with piceous. 



//earf densely punctate, punctures rather small and longitudinal; 

 clypeal suture very indistinct. Prothorax slightly transverse, 

 much wider at apex than at base, anterior angles rounded, densely 

 punctate, punctures narrow and longitudinal; disc with two rather 



