Murdoch and Suter. — Results of Dredging. 301 



54. Cocculina tasmanica, Pilsbry. 

 Acmcea parva, Angas, var. tasmanica, Pilsbry in " Nautilus," 

 1895, p. 128. Nacella tasmanica, Tate and May, Proc. Roy. 

 Soc. S.A., vol. xxiv, p. 102, 1900 ; Proc. Linn. Soc. N.S.W., 

 1901, p. 411, pi. xxvii, figs. 89, 90. Cocculina meridionalis, 

 Hedley, Memoirs Austral. Museum, vol. iv, pt. 6, 1903, p. 331, 

 fig. 64 in text. 



A single specimen, which, was examined by Mr. C. Hedley, 

 who kindly reported on it as follows : " Sculpture worn off, 

 but in size, shape, and general appearance it is just like my 

 C. meridionalis." Quite recently he informed us that his species 

 was identical with Pilsbry's tasmanica. One of us, who has a 

 syntype of the latter in his collection, compared our shell with 

 it and found it to agree in every respect ; the deciduous nucleus 

 is still present, but the epidermis, and with it the sculpture, are 

 lost. The type was dredged by Mr. May in 10 fathoms in Fred. 

 Henry Bay, Tasmania. This is a very interesting addition to 

 our fauna. 



55. Genus (?). Plate XXVII, figs. 52-54. 



Shell small, flat, oblong-scutiform, sides almost parallel, the 

 posterior end having a broad inward curve ; the apex minute, 

 laterally disposed and almost terminal ; anterior end imperfect. 

 Sculpture consists of numerous small rounded and irregularly 

 spaced concentric growth-periods, more distant anteriorly, the 

 primary periods scarcely so oblique to the axis as the nucleus. 

 Colour whitish. Protoconch distinctly marked off, smooth, cap- 

 shaped, with a slightly flattened rim-like margin ; it consists of 

 about one turn, somewhat oblique to the major axis. The lateral 

 margins slightly laminated and with an upward curve, thus 

 giving the dorsal surface a slightly concave aspect. Interior 

 slightly polished and with shallow incised lines upon the inner 

 slope of the lip, indicating the line of attachment ; immediately 

 underneath these lines are right and left small narrow muscular 

 impressions, the left largest and rather more anterior. Length, 

 in broken condition, 7'76 mm. ; breadth, 4 - 66 mm. 



Obs. The generic position of this unique specimen is somewhat 

 of a puzzle to us, as we are not acquainted with anything to 

 match it. It may belong to some tectibranchiate genus, perhaps 

 of the family Pleurobranchidce. 



56. (?) Recluzia, sp. Plate XXVII, figs. 55, 56. 

 Shell small, turbinate, imperforate, thin and fragile, smooth, 

 with a squarish mouth. Sculpture consists of minute growth- 

 striae perceptible only here and there ; near the outer lip several 



