BY c. h^:dley. 457 



Van Diemen's Inlet, Gulf of Carpentaria. Mr. J. C. Gabriel 

 contirmed this identification by comparison with the type in 

 London. As the figures of the species are all unsatisfactory, I 

 add an illustration of a Hope Island shell, 8 mm. in length. The 

 species was common in 5-10 fathoms. For this species Bottger"*^ 

 formed a new subgenus Paraclatliurella. 



Mangelia infulata, n.sp. 



(Plate xliv., fig.92.) 



Shell small, very solid, regularly biconical, sharply angled at 

 the shoulder. Colour white, or pale buff with narrow bands of 

 darker buff. Whorls five, including a protoconch of two smooth 

 rounded whorls, last whorl two-thirds of the shell's length. 

 Sculpture : on the body- whorl are eight widely spaced thick and 

 prominent vertical ribs radiating from the suture, and vanishing 

 on the base. On the shoulder these are linked and overrun by 

 a spiral cord of nearly equal calibre. This sculpture is repeated 

 on the penultimate, where the radials are smaller and closer. On 

 the antepenultimate the spiral cord degenerates, and the radials 

 are closer, rounder, and more oblique. Apart from this, the 

 shell has, in general, a smooth expression, but a few faint spirals 

 mark the base, while still fainter scratches traverse the rest of 

 the shell. Aperture narrow^ protected by a heavy outstanding 

 varix, anteriorly with a semicircular excavation, followed by a 

 tubercle on either side. Canal short, broad, effuse. Length 3-55; 

 breadth Iw mm. 



Numerous specimens, in 5-10 fathoms, Hope Island. I took 

 it also, in July, 1901, in 15 fathoms, east of Great Palm Island. 



Mangelia angulata Reeve,"* appears, from the figure, to be 

 larger and to have a sharper, more prominent, peripheral keel. 

 Possibly the record of that species from Cape Yorkf was based 

 •on M. infulata. 



* Bottger, Nachr. deut. Malak. Gesell. xxvii. 1895, p. 56. 



* Conch. Icon. ill. Pl.viii., f.62. 



t Brazier, Proe. Linn. Soc. N. S. Wales, i. p. 160. 



