BY C. HEDLEV. 609 



ture : on the base are two plain spiral keels; the latter whorls 

 with three gemmule rows, the median being much the smaller; as 

 it mounts the spire it diminishes, fading out about half way up. 

 The gemmules are about 18 to a whorl, large, prominent, and set 

 about half their diameter apart. A raised thread winds along 

 the suture. First whorl of the protoconch smooth, the rest with 

 a central keel and transverse bars. Aperture subquadrate, and 

 notch simple, spur of the lip crossing the pillar. Canal short, 

 straight. Length 4*8; breadth 1-4 mm. 



Hab. — Sydney Harbour; one specimen (H. L. Kesteven). 



Type. — To be presented to the Australian Museum. 



Distinguishing features of this species are its small and slender 

 form, median row of small gemmules between two rows of large 

 ones and the five-whorled protoconch. A second specimen from 

 Mrs. Starkey's collection, of broader proportions, is also figured 

 (fig. 25). 



Triphora albovittata, n.sp. 



(Plate xxxii., figs. 26, 27.) 



Shell conical, moderately broad. Whorls nine, plus a four- 

 whorled protoconch, parted by deep sutures. Colour pale yellow; 

 upper row of gemmules on each whorl white, beneath them a 

 narrow line of ochre, base and protoconch ochreous. Sculpture : 

 on the base are two plain spiral keels, above which are four rows 

 of gemmules; the four preceding whorls have three rows each, 

 and those above again two each. The gemmules are set their 

 own diameter apart, about twenty to a whorl, joined by a string 

 to their fellows in the same and their neighbour in the next row. 

 Protoconch : first and second whorls smooth, third and fourth 

 with a median keel and transverse bars. Aperture imperfect in 

 the examples seen. Length 4-8; breadth 1-5 mm. 



Hah. — Balmoral Beach; in shell sand, rare. 



Type. —To be presented to the Australian Museum. 



The white subsutural gemmules underlined by ochre, aff'ord a 

 recognition mark for this species, which is nearly allied to T. 

 gi^anifera, Brazier, and may indeed ultimately prove only a variety 

 of that. 



