BY c. hedlp:y. 617 



lower much the hirger. between which are intercalated on the 

 lower whorls a row of minute gemmules. The gemmules are 15 

 to a whorl; in transverse order they mount the spire obliquely; 

 those of the principal row are large, prominent, hemispherical 

 bosses. Protoconch of 5| whorls with a median keel and trans- 

 verse bars. Aperture subquadrate, anal notch simple, spur of lip 

 not reaching the pillai-. Canal short, straight. Length 5-5 ; 

 breadth 1*5 mm. 



Triphora labiata, a. Adams. 

 (Plate xxxiii., figs. 42, 43, 44.) 



This species was originally described (Proc. Zool. Soc. 1851, 

 p. 279) as follows: — "T. testa subulato-pyramidali, nigro-fusca, 

 in medio tumida, spira apice obtuso; anfractibus 10, planulatis, 

 triseriatim granuloso-carinatis, suturis concavo-impressis; labro 

 reflexo, dilato, albido; canali brevi, subrecurvo. Sydney, under 

 stones, low water (Mr. Strange). A small nearly black shell, with 

 the outer lip dirty white or pale fuscous." To this Angas added 

 (op. cit. 1867, p. 209) the important item, "Length 3 lines." 



Tryon naturally included this in a list of lost species when he 

 monographed the genus. Though such scanty data are insufficient 

 to distinguish this among the host of known Trijohora, it is enough 

 to pick it out from the Triphora of Sydney Harbour. The only 

 Sydney shell which suits the description of Adams, and one 

 which has not hitherto been locally recognised, is here figured. 

 I have found it at Cape Banks alive at low water under stones. 

 I add the following description : — 



Shell glossy, short, broad, swollen, apex slightly m.ammillate. 

 Whorls ten, separated by deep sutures. Colour : the lower 

 whorls are entirely dark chocolate; towards the apex the lower 

 half of each whorl becomes gradually paler, reaching a buff colour 

 at the apex, the chocolate persisting above as a narrow sutural 

 thread; outer lip dull white. Sculpture : on the base are three 

 plain spiral keels. The ultimate and penultimate whorls have 

 three equally spaced and sized keels bearing numerous (more than 

 twenty) small, close-set, ill-defined gemmules. In transverse 



