450 THE INSECTS OF KING's SOUND AND ITS VICINITY, 



length, and very slightly rounded in front. Head not swollen 

 behind the eyes, occiput coarsely punctate, a transverse ridge 

 separating it from the front, which is almost smooth in the middle 

 and impressed and punctate on each side ; the clypeus is large, 

 thinly punctate, and foveate in the middle. Thorax shorter than 

 the width, very rounded on the sides and narrowed behind, rather 

 convex in the middle ; the basal side impressions well marked, 

 the transverse apical impression almost rectangular, the whole 

 coarsely but not very densely punctate. Elytra 8-grooved with 

 two rows of strong punctures in each, the interstitial ridges very 

 narrow. 



Length, 8 lines. 



20. Helluosoma longicolle, n.sp. 



Black, nitid, clothed with short yellowi.sh pubescence. Head 

 smooth in the middle, and a little depressed in the centre of the 

 forehead, the rest of the head coarsely punctate ; the clypeus 

 mnch broader than long, the labrum rather longer than broad, 

 rounded in front with an impression near each apical angle. 

 Thorax cordiform, longer than broad, and roughly punctate with 

 two or three imperfect longitudinal ridges on the disk. Elytra a 

 little broader than the thorax, and about two and a half times the 

 length, 8-striate, with the interstices moderately flat, and densely 

 and minutely punctate. 



Length, 9 lines. 



21. Helluosoma viridipenne, Macl. 



Proc. Linn. Soc. N.S. Wales, 1887 (2), Vol. II., p. 216. 

 I find the metallic colouring of the elytra of this species varies 

 from green to blue. 



22. Helluosoma parvulum, Macl. 

 jEnigma parvidiim, Macl., Mast. Cat. Col. Sp. 76. 



