6 Mr. J. O. Westwood's Descriptions of the Species 



b. (Sub-genus Cryptodellus, Westw.) Prothorax antice in medio 

 tuberculo armatus. Elytra sulcis numerosis, interstitiis 

 acute elevatis. 



Sp. 7. Cryptodus (^Cryptodellus) coviceps, Westw. (Plate I. fig. 6.) 

 C. obscure fusco-nigricans, punctatus, punctis luteo-setosis ; 

 capite magno semicirculari, margine acuto et recurvo, ver- 

 tice bituberculato ; protlioracis lateribus rotundatis, angulis 

 posticis acutis, margine anticoin medio 1-tuberculato, postice 

 canaliculato, elytris multicostatis, mento postice acute appen- 

 diculato. 

 Long Corp. lin. 8, 



Habitat in Australia, Swan River. In Mus. Hop. Oxon. ; et 

 nostr. 



This very distinct species is of an obscure brownish black 

 colour, not shining, strongly punctate, the punctures oval, and 

 each bearing a short luteous seta in the middle ; the broad pro- 

 thorax and narrow elytra give the insect a parallel appearance ; 

 the head is large and semi-circular, the disc flat, with two small 

 but acute tubercles in the middle ; the whole of the margin is 

 sharp and turned upwards ; the antennae are lO-jointed, the basal 

 joint is broad, with the inner apical angle rounded ; the maxillae 

 have the outer lobe very bent and acute at the tip, with a strong 

 acute tooth at its base ; the inner lobe is small, obti.se at the tip, 

 with two slight impressions indicating a trifid structure ; the men- 

 turn is broad, the fore margin slightly emarginate in the middle, 

 the anterior angles rounded, and the base produced into a long 

 acute point, with the sides raised, extending over the jugulum, 

 nearly to the point of the prosternum. The prothorax is wide, 

 with the sides regularly rounded and slightly margined, the 

 hinder angles acute, the base slightly sinuated within the angles ; 

 the fore margin with a tubercle in the middle ; the disc covered 

 with oval punctures, much larger than those of the head, and 

 the middle of the hind part of the disc is canaliculated. The 

 elytra are rather narrow, with the sides nearly straight, moderately 

 convex, each with eleven rows of round punctures, with the edges 

 not sharp, the row next the suture uniting with the second row 

 near the middle of the elytra ; the interstices between these rows 

 of punctures are acutely ridged, each elytron having ten of these 

 rid'^es or small costas, the lateral ones being less distinct, and the 

 top of eacii ridge is marked witli a row of minute jjunctures, 

 bearing short luteous setae. The subapical tubercle is small, and 



