28 GASTEROPODA. 



at the upper part, then angled and conspicuously encircled with two 

 i-ows of tubercles ; purple brown ; aperture small, columella very 

 broadly excavated, purplish, rather produced at the base. (Reeve) 

 Australia. 



* 108. L. luctllOSa, Reeve. Shell accurniuately ovate, imper- 

 forated, whorls slantingly convex, longitudinally plicately striated, 

 spirally grooved towards the lower part ; livid brown ; aperture rather 

 small, chestnut ; columella purplish. (Reeve.) 



* 109. L, nOVSe Zealandi88, Reeve. Shell somewhat globosely 

 turbinated, spire rather short, very sharp, whorls rounded, spirally 

 irregularly linearly grooved ; opaque white, obscurely very faintly 

 red-flamed ; aperture nearly rounded, chestnut brown in the interior ; 

 columella very broadly excavated, livid chestnut. (Reeve.) 



* 110. L. follllata, Marty n. Shell obliquely conical, trochus- 

 shaped, thick, itnperforated, orange v cream-colour, sometimes encircled 

 with brown or blackish grey bands ; transversely roughly striated and 

 papillose ; papillae sometimes oblong and more or less obsolete, some- 

 times prickly, prominent, and numerous. (Reeve.) 



RIS3LLA. 



Shell trochiform, imperforate, base flat or concave ; whorls keeled ; 

 aperture rhombic. 



Australia. Tasmania. 



* 111 R. kielmanseggi, Danker, Voy. Novara, Zool. Shell 

 conical, bluish brown, whorls plicato-nodulose, rugose, marked with 

 numerous oblique points ; body whorl acutely angled ; base flattish, 

 spirally grooved ; throat yellowish white. Length, '53 ; breadth, '64. 



Auckland. 



FAMILY EISSOID^;. 



Shell minute, spiral, more or less turreted ; aperture entire ; dper- 

 culum horny, sub-spiral ; foot long, sub-triangular, truncated in front 

 and pointed behind. 



RISSOA. 



Shell conical, pointed, many-whorled ; smooth, ribbed, or cancel- 

 lated ; aperture rounded. 

 World- wide. 



112 R. mgulOSa, s-p. nov. Elongated, whorls seven, smooth, 

 obscurely transversely ribbed ; aperture ovate. White or yellowish 

 white. Length, 3 ; breadth, '12. 



Stewart's Island. Chatham Islands. 



113. R. naiia, sp. nov. Whorls five, swollen, finely transversely 

 ribbed ; aperture ovate. White. Length, '1 ; breadth, '05. 



114. R. SllbfllSCa, sp. nov. Whorls five, flattened, smooth but 

 not polished; aperture round. Pale brown. Length, '12; breadth, 

 05. 



Stewart's Island. 



