Rissoina.} GASTROPODA. 219 



1. Rissoina Hanleyi, Schwartz, 1860. Plate 13, fig. 8. 



Rissoina Hanleyi, Schwartz, " Familie der Rissoideu," 1860, p. 64, pi. 4, 

 f. 28; Man. Couch. (1), ix, 370, pi. 55, f. 21; Tate, T.R.S. S.Aust., 

 xxiii, 327 ; Pritchard and Gatliff, P.R.S. Vic., xiv (u.s.), 109. R. fasciata, 

 A. Adams : Suter, P. Mai. S., iii, 7, not of Adams. R. Hanleyi, Schw. : 

 Suter, P. Mai. S., viii, 32. 



Shell small, elongate, imperforate, strong, shining, closely costate. 

 Sculpture consisting of close subsinuous and flattish axial riblets, 

 about 22 to 25 on the last whorl, evanescent upon the base ; crossed 

 by numerous fine spiral striae. Colour typically milk-white, with 

 two orange-brown bauds ; but sometimes the shell is entirely white, 

 or with 2 to 5 narrow brown bands on the body-whorl. Spire high, 

 conical, about twice the height of the aperture ; outlines slightly 

 convex. Protoconch small, papillate, of 1^ smooth and convex whorls. 

 Whorls 6 to 7, slightly convex, the last a little more than half the 

 total height ; base rounded. Suture impressed. Aperture oblique, 

 semicircular, angled above, faintly channelled on the left side of its 

 base. Peristome thickened, slightly expanded, edge blunt. Columella 

 oblique, short, truncated. Inner lip forming a conspicuous callosity 

 on the parietal wall, which is united with the outer margin. Oper- 

 culmn unknown. 



Diameter, 2-8 mm. ; height, 6 mm. (type, 7 ram.). 



Animal unknown. 



Type (?) 



Hob. Bay of Islands ; Hauraki Gulf (H. S.). Australia, Philip- 

 pine Islands (type). 



Remarks. Two specimens in the Canterbury Museum, collected 

 by Mr. C. Spencer near Auckland, and determined as R. fasciata, A. Ad., 

 by the late Captain Hutton, are undoubtedly R. Hanleyi. The New 

 Zealand specimens taken for R. fasciata by Angas and Sowerby were 

 no doubt varieties of R. rugulosa, which is nearly allied to the former. 

 I am not aware that R. fasciata has ever been found in New Zealand 

 waters. 



2. Rissoina rufolactea, Suter, 1908. Plate 13, fig. 9. 



Rissoina rufolactea, Suter, P. Mai. S., viii, 33, pi. 3, f. 35. 



Shell small, elongate, imperforate, solid, opaque, costate, not 

 shining. Sculpture : The first 2 whorls are smooth, the succeeding 

 ones axially costate, the riblets thick and rounded, interstices of the 

 same width as the costee, about 15 on the last whorl, and stopped 

 below the periphery, leaving the base quite smooth ; there is no trace 

 of spiral sculpture. Colour : The first 3 whorls are rufous with a 

 narrow darker band below the suture, the rest yellowish-white ; or 

 the whole shell may be rufous ; or with a milk-white peripheral band, 

 the base white. Swire elevated, a little more than twice the height 



