BY ARTHUR M. LEA. 547 



This species is at once distinguished from Utoralis hy the 

 clothing of the upper surface being of two kinds ; the elytral 

 clothing is partly erect. It also differs in its much smaller size, 

 narrower and slightly more convex form, shorter legs, and by the 

 produced portion of the prothorax being narrower and more 

 convex. I have taken numerous specimens just under the surface 

 about beach-growing plants, and an occasional specimen under 

 seaweed. 



COLYDIID^. 



Derktaphrus analis, n.sp. 



Shining; black, under surface piceous-black, tarsi and apical 

 joint of antennpe dark reddish-brown. 



Head sparsely and very minutely punctate ; clypeal suture 

 almost obsolete. Prothorax elongate, fully twice as long as wide; 

 very minutely punctate, punctures even smaller than on head; 

 with a deep, sharply defined longitudinal canal not open at base 

 and terminated at about one-fifth from apex, and divided into 

 two parts of which the apical is slightly more than one-third the 

 length of the basal part; base rounded on each side. Elytra 

 smooth; the suture, 3rd, 5th and 7th interstices raised at base 

 and apex, very feebly so elsewhere; sides impunctate, towards 

 base and apex feebly striate-punctate, punctures elsewhere very 

 feeble, interstices impunctate. Under surface sparsely and 

 minutely punctate; apical segment densely punctate and on each 

 side with a distinct subtriangular depression conjoined at apex. 

 Four anterior tibi(e with two small subtriangular gi'anules invisible 

 from most directions. Lensjth 10, width 24 mm. 



Hah. — Tweed and Richmond Rivers, N.S.W. 



A very distinct species on account of its almost impunctate 

 surface, long and deeply channelled prothorax, and apical segment 

 of abdomen. A number of specimens were obtained under the 

 bark of rotting logs. My smallest specimen measures but 7 mm. 

 D. Bakeivelli, Pascoe, wdiich it much resembles, has moderately 

 strong elytral punctures with somewhat different interstices. 



