BY C, HEDLEY. 729 



and ascending the suture. Whorls seven, angled at the shoulder, 

 flattened at the periphery, and excavate at the base. Sculpture: 

 first two whorls smooth, on the next are two spiral cords which 

 multiply as they descend, until, on the last whorl, they amount 

 to eighteen. Of these, three run on the fasciole and ten on the 

 base, those on the periphery overrun the i-ibs unchanged, and 

 carry minor threads in their interstices. On the peripheral belt 

 are prominent undulating perpendicular ribs, which amount to 

 fourteen on the last whorl. Over all are dense microscopic grains. 

 Aperture small, ovate. Outer lip defended by a prominent 

 varix, sculptured like the rest of the shell, with a smooth up- 

 turned and notched margin, grooved within the throat. Sinus 

 subsutural, deep and narrow, a solid coloured callu.s-patch at the 

 right insertion, on the inner lip a smear of callus. Canal short. 

 Length of the orange specimen figured, 6-3; breadth, 28 mm. 

 Another grey specimen, length, 7*5; breadth, 3 ram. 



Hah.—l have collected this species at Wreck Bay, Sydney 

 Harbour (type-locality), and Dudley, N.S.W. 



Hitheito this species has been confused with Clathurella 

 hicolo7' Angas,* with which it is associated. I am indebted to 

 Mr. Tom Iredale for identifying C. hicolor for me by the British 

 Museum type. A specimen so authenticated is here figured 

 (Figs. 60,61). Compared with C. hicolor, the novelty is rather 

 larger, comparatively broader, with more prominent sculpture, 

 and consequently sharper shoulder-angle. The uniform orange 

 colour of the base of C. hicolor affords a ready means of recog- 

 nition. 



Both these should, I think, take their place in Glyphostoma, in 

 which genus they approach G. alicece Melvill & Standen, and G. 

 callistum Hervier, by form, sculpture, and colour-pattern. 



DUPLICARIA BALLINA, sp.nOV. 



(Plate Ixxxiv., fig.86.) 

 No perfect specimens of this distinct species have yet reached 

 me. It is, therefore, provisionally described from beach-worn 

 material. In size and general appearance, it is comparable to 



♦Angas, Proc. Zool. Soc, 1871, p. 18, PI. i., f.20. 



