BY A. M. LEA. 503 



double ridge on each side, becoming single above front of scrobe 

 (which is very conspicuous from above). Antennae short. Pro- 

 thorax about as long as wide, widest and subangularly dilated in 

 advance of the middle^ apex about as wide as base, and obtusely 

 bilobed in middle, transversely impressed near apex, and rather 

 widelv grooved along middle; with coarse, concealed punctures. 

 Elytra suboblong, much wider than prothorax: with rows of 

 very large punctures, readily traceable through scales; alternate 

 interstices irregularly elevated, third produced and subtuber- 

 culate at base, with a small tubercle before, and a large conical 

 one at, summit of posterior declivity; fifth with a conspicuous 

 oblique elevation near base, and a distinct tubercle at, and 

 another below, summit of declivity; each shoulder with a con- 

 spicuous conical tubercle. Legs moderately long. Length, 

 9|-10mm. 



Zfa6. — South Australia: Macleay Museum, and A. Bovie. 

 Close to 0. nodosa, but prothorax subangularly dilated in 

 middle, and fifth interstice conspicuously elevated and somewhat 

 oblique towards base. The derm is normally entirely concealed; 

 but, where I have abraded the type, it is seen to be black. The 

 clothing is entirely without pattern on the two specimens before 

 me, but possibly on fresh ones some pattern would be in evidence. 

 Myositta melanosoma, n.sp. 

 $. Black; rostrum, scape, and legs more or less reddish, apical 

 half of abdomen diluted with red. Moderately clothed with 

 white, depressed setae or thin scales, denser on sides of under- 

 surface than elsewhere. 



Head with fairly dense punctures. Rostrum about the length 

 of prothorax, almost straight; basal third with dense and rather 

 small punctures, sparser and much smaller elsewhere. Scape 

 thin, almost as long as funicle and club combined; funicle very 

 little longer than club. Prothorax about as long as its greatest 

 width, sides feebly increasing in width from apex to near base; 

 with dense and rather small, but sharply defined punctures. 

 Elytra moderately long, distinctly wider than prothorax, sub- 

 parallel-sided to near apex: with rows of rather large punctures, 

 becoming small posteriorly. Mefasternuin with a wide, vague, 



