IRKDALE : ON KEKMADEC MOLLTTSCA. 227 



tidges, a few intercalatory ribs sometimes present; all are continuous, 

 a very slight depression only being noticeable in the middle of the 

 'iback. The interstices appear smooth. Aperture narrow ; the teething 

 agreeing with the ribbing present. 



Length 7, breadth 5, height 4 mm. 



Hah. — Sunday Island, Kermadec Group. 



Trophon suBTROPicAr,is, n.sp. PL IX, Fig. 3. 



Shell very small, regularly trophonoid. Colour brownish. Protoconch 

 two-whorled, elevated, smooth, white. Four adult whorls, regularly 

 shouldered, with eight to ten longitudinal varices, which are crossed 

 by spiral ribs, the tirst two adult whorls showing one, the third three, 

 and the last tive, three of which are prominent. In some shells the 

 spirals overrule, but usuall)' they are subordinate to the longitudinal 

 varices. Aperture oval, denticled within the outer lip, which is heavily 

 varicose. Canal short, recurved, open. Operculum typical. 



Measurements of type : Length 3, breadth 1*5 mm. 



Hab. — Sunday Island, Kermadec Group. 



* CoNUS Kermadecensis, n.sp. PI. IX, Figs. 1.5, 16. 



Shell of medium size, quite smooth. Colour reddisb-yellow, towards 

 the middle of the shell a fainter band is usually seen when the shell 

 is destitute of the thick red-brown epidermis, rarely persistent, save 

 on the last quarter of a whorl. Number of whorls unknown. Spire 

 slightly elevate ; broad, conical, sutures impressed, periphery 

 subangled. Anal notch distinct, outer lip thin. Pillar lip almost 

 straight with a faint twist at anterior end ; aperture widening 

 anteriorly where there are a few wrinkles. Inside white, edge of 

 outer lip tipped with brown. Operculum variable in size and shape. 



Measurements: Height 55, 42, 31mm.; breadth 29, 25, 18 mm.; 

 height of spire 12, 8, 8mm. 



Hab. — Sunday Island, Kermadec Group. 



Cassidea Perkyi, n.sp. PI. IX, Fig. 17. 



Shell small, ovate, smooth, aperture more than half tlie length of 

 the shell, outer lip reHexed, scarcely variced, and bearing no denticles. 

 Colour fawn with four darker transverse bands, only noticeable on the 

 last whorl and clearly marked on the reflected lip as reddish-brown 

 marks ; sometimes the bands are broken and appear as oblong marks. 

 Five adult whorls and tlie usual juvenile Cassoid apex, but varices 

 are not apparent, save rarely on the last half-whorl. Aperture some- 

 what obliquely pyriform, the anterior canal short and recurved. 

 Columella with an anterior groove, but otherwise smooth. Length 43, 

 breadth 24, length of aperture 25 mm. 



Hab. — Sunday Island, Kermadec Group. 



Bearing a deceptive resemblance to C. cernica, Sowerby, but that 

 species is a smooth relation to C. vibex, to which this form is not 

 closelv allied. 



