12 RECORDS OF THE AUSTRALIAN MUSEUM. 



band then successively occur. The sculpture consists of fine 

 raised growth lines which slightly pucker the suture ; the reticu- 

 lations characteristic of many Queensland species were not visible 

 in the specimens under examination, from which they might, how- 

 ever, have been worn. Suture impressed. Whorls five, convex, 

 descending rather suddenly at the aperture for the breadth of the 

 yellow peripheral zone. Aperture oblique, squarish, light within 

 and showing the chocolate bands. The lip is blackish, very 

 glossy, thickened, and widely reflected throughout, the columellar 

 expansion almost covering the deep narrow umbilicus. A thin 

 transparent callus extends from insertion to insertion of the lip. 



Length 52 mm. Breadth 38 mm. 



Collected on the Musa River, on the North East Coast of British 

 New Guinea, by His Honour Sir W. MacGregor, K.C.M.G. 



The original of this description and life size figure is registered 

 in the collection of the Australian Museum as C. 2890. 



This species, and T. broadbenti, Brazier, I now consider to be 

 the only representatives of Thersites yet discovered in New 

 Guinea. Much interest therefore attaches to so handsome and 

 characteristic a species as the novelty occuring in a locality so 

 remote from the principal seat of the genus. Though differing in 

 size and colour, an unfigured Queensland species T. etheridgei. 

 Brazier, closely approaches in contour and perforation, and may 

 be held as nearest in systematic order. 



Specimens were received, perforated, and strung together in 

 bunches for native ornaments. One tassle contained this species 

 and Chloritis rehsei tied together. The animal has not yet been 

 seen. 



