610 STUDIES ON AUSTRALIAN MOLLUSCA, 



Triphora granifera, Brazier. 



Triforis graniferus^ Brazier, Proc. Linn. Soc. N.S.W. (2) ix., 

 1894, p. 173, pl.xix., f. 10; 1 T. fasciata, Tate & May, op. cit., 

 1901, pi. xxiii., ff. 10-11. 



(Plate xxxiii., figs. 28, 29.) 



This species is one of the commonest in Sydney Harbour, and 

 extends to Tasmania and South Australia. As the original 

 description was rather brief, I add the following : — 



Shell small, regularly conical. Whorls eight, plus a four- 

 whorled protoconch, parted by deep sutures. Colour light brown, 

 upper gemmule row paler, base and sutures chocolate, lip dull 

 white. Sculpture : on the base two plain spiral keels, on the 

 periphery a keel with incipient gemmules and above three rows 

 of closely packed gemmules, set about 25 to a row, less than their 

 own breadth apart. On the lower whorls the gemmules of every 

 row are equal in size; above the median row has smaller gemmules. 

 A nodose thread runs along the sutures. Aperture subquadrate, 

 spur of the lip not reaching the pillar; anal notch simple, shallow; 

 canal short and straight. Length 4-45; breadth Lo mm. 



Triphoka angasi, Crosse k Fischer. 



Tripho7'is angasi, Crosse k Fischer, Journ. de Conch, xiii. 1865, 

 p. 46, pi. i., ff. 12-13. 



Shell of moderate size, tapering slowl)', glossy, solid. Colour 

 buff, with a chocolate base and sutural band, gemmules white. 

 Whorls about thirteen, parted by distinct sutures. Sculpture : 

 on the earlier adult whorls are two gemmule rows, on the seventh 

 whorl a minute intermediate row is intercalated which gradually 

 attains the size of the other rows. The additional row is nearer 

 to the upper than to the lower row. Along the suture winds a 

 small plain thread, which on the last whorl appears as a fourth 

 row of gemmules. The base has one plain spiral thread. In the 

 immature stage the species has a flat base. The gemmules are 

 set their own breadth apart, about 22 to a whorl, conspicuous 



