454 STUDIES IN AUSTRALIAN ENTOMOLOGY, XVll., 



with anterior margin bordered. Mesosternum punctate in con- 

 cavities to receive femora; metepisterna bearing a few punctures. 

 Ventral segments all punctate towards sides; punctures of three 

 apical segments in a transverse row along anterior margin. 

 Length, 11-3-13; breadth, 3-75-4-4 mm. 



llab. — North- Western District of Victoria (Dixon;. 



Found by Mr. J. E. Dixon at Sea Lake, and other places in 

 the North- West of Victoria. 



Allied to S. cydoderus Chaud., but at once distinguishable 

 from that species, and from the other allied species, S. iridi- 

 tinctus Chaud. J S. ischnus Chaud., and S. obscurus Blkb., by 

 its larger size, etc. Compared with S. damp'teri 81., with which 

 it agrees in size, it differs by form less robust; elytra quite black, 

 not with a virescent tinge; eyes more convex; elytra narrower, 

 striae finer and less strongly punctate, interstices less convex on 

 disc, lateral apical sinuosities less strongly reHexed. From >S'. 

 hahitans SI., it differs by smaller size; less robust form; prothorax 

 longer; elytra with inner humeral angle more marked, eightli 

 stria far less strongly impressed along sides, third with four or 

 five punctures; posterior tarsi with fourth joint narrower and less 

 triangular, fifth joint glabrous beneath. From S. monarensis 

 SI., and >S'. cooki SI., it differs by colour black (elytra not sericeous 

 in 9); more elongate and less robust form; longer, narrower, and 

 less triangular fourth joint of posterior tarsi, etc. 



NoTONOMUS JOHNSTONi Sloanc. 



A single specimen (9) of N. johnstoni occui'red to me near 

 Craven railway-station (12 miles south from the town of Glou- 

 cester), and Dr. Ferguson took it at Camden Haven. Evidently 

 its habitat is the country drained by the Manning River. Only 

 the female of the typical form is known to me. It is worthy of 

 notice that, in this species, the apical ventral segment has a well 

 developed, triangular process fitting into the lateral, apical sinu- 

 osity of the elytra. In other species of iVoto^ionius, a similar 

 slight, lateral process of the apical, ventral segment may be seen, 

 but notnearlvso marked as in N. jo/itistoni; this can be observed 



