174 GASTROPODA. \_AspidobrancJi in. 



2. Cocculina compressa, Suter, 1908. Plate 34, figs. 14, 14a. 



Cocculina compressa, Suter, P. Mai. S., viii, 27, pi. 2, f. 17. 18. 



Shell small, thin, laterally much compressed, the sides parallel, 

 anterior and posterior end raised, navicular, the summit anterior ;nid 

 considerably raised. Sculpture consisting of fine rather distant and 

 indistinct radiate stria3, crossed by distant concentric growth-lines. 

 Colour white. Nucleus minute, resting on the narrowly elevated sum- 

 mit, situate at the anterior two-fifths of the length. Anterior and 

 posterior slope straight, side slopes lightly convex. Margin sharp, 

 smooth. Interior white. 



Length, 5 mm. ; breadth, 2 mm. ; height, 2-8 mm. 



Animal unknown. 



Type in the collection of Miss Mestayer, Wellington. 



Hal>. Flat Point, East Cape one specimen (type) ; a second 

 example was obtained in 38 fathoms, 5 miles south of Cuvier Island 

 (Captain Bollons). 



Remark. A nearly allied form is the Australian C. coercita, Hedley 

 (Rec. A.M., vi, 289, pi. 54, f. 1, 2). which, however, has no radiate 

 striation, and the apex a little behind the centre. 



3. Cocculina craticulata, Suter, 1908. Plate 34, figs. 15, 15a. 



Cocculina craticulata, Suter, P. Mai. S., viii, 27, pi. 2, f. 15, lf>. 



Shell small, thin, oval, the sides subparallel, elevated. Sculpture 

 consisting of subequal, distinct, close concentric grooves, reticulated 

 by radiate grooves, which are slightly slanting to the left on the an- 

 terior slope, the surface being cut up into series of squarish granules, 

 the summit having only concentric sculpture. Colour yellowish-green. 

 Nucleus spiral, smooth, small, evidently deciduous, very little within 

 the posterior margin. Posterior slope short, steep, concave ; anterior 

 slope long, regularly rounded. Inside light green, shining. 



Length, 2-8 mm. ; breadth, 1-8 mm. ; height, 1-2 mm. 



Animal unknown. 



Type in my collection. 



Hal). Dusky Sound, in 30 fathoms (R. Henry). 



4. Cocculina tasmanica, Pilsbry, 1895. Plate 34, fig. 16. 



Acmcea parva, Angas, var. tasmanica, PiLs., ' The Nautilus." ix, 128. 

 Cocculina tasmanica, Murdoch and Suter. T.'N.Z.I., xxxviii. 1905 (100*)), 

 301. Nacella tasmanica, Tate and May, P.L.S. N.S.W.. 1901, 411, 

 pi. 27, f. 89, 90. Cocculina meridionalis, Hedley, Mem. A.M., iv, pt. 6, 

 1903, 331, f. 64 in text, 



Shell small, thin, elevated, slightly asymmetrical. Sculpture : 

 Fine dense concentric threads, crossed by fine and close radiate stripe, 

 minutely decussating the surface, and indistinct anteriorly. Colour 

 opaque - white. Apex smooth, inrolled, deciduous; summit a little 

 within the posterior margin. Posterior slope steep, a little concave ; 



