70 Transactions. 



Pelecypoda. 



Nucula lacunosa, Hutton. 



Niicula sulcata, A. Adams, P.Z.S., 1856, p. 53. Id., Thes. 

 Conch., iii, 1860, p. 153, pi. 2i9, f. 127 (not of Brown). 

 N. lacunosa, Hutton, P.L.S.N.S. W., ix, 1884, p. 528. 



Several specimens in which the radii are more prominent 

 than in shallow-water specimens. 



Nucula nitidula, A. Adams. 



Nucula nitidula, A. Adams, P.Z.S., 1856, p. 51. Id., Thes. 

 Conch., iii, 1860, p. 150, pi. 229, f. 142. 



A few specimens were procured. 



Leda bellula, A. Adams. 



Leda bellula, A. Adams, P.Z.S., 1856, p. 49. Id., Hanley, 

 Thes. Conch., iii, I860., p. 122, pi. 22S, f. 74. 



A species which occurred abundantly answers fairly to 

 the above quotations. But the lithograph, fig. 25 of pi. v, 

 '• Leda," in Conch. Icon., vol. xviii, is so bad a copy of the 

 figure in the Thesaurus that it looks like a different species. 



A. Adams, whose name is the danger-signal for untrust- 

 worthy work, reports the species as taken by F. Strange in 

 Australia. But, on the one hand, no Australian shell like 

 this is known to me, and, on the other, Strange collected ex- 

 tensively in New Zealand. Indeed, he was the first, and for 

 half a century the last, to dredge off the New Zealand coast, 

 and discovered many of the species enumerated in this report. 

 I am therefore disposed to think that "Australia" has been 

 substituted here for " New Zealand." The species before me 

 is that known to all conchologists in New Zealand as Leda 

 concmna. The figures of Leda concinna more nearh express 

 the proportions of Poroleda lanccolata than any other member 

 of the New Zealand fauna, and are incompatible with the 

 traditional determination. 



Leda fastidiosa, A. Adams. Plate I, figs. 1, 2. 



Leda fastidiosa. A. Adams, P.Z.S., 1856, p. 49. Id., Hanley, 

 Thes. Conch., hi, 1860, p. 125, pi. 228, f. 82, 83. 



A considerable number were dredged. The concentric 

 sulci vary from the least trace to considerable development, 

 but are never so coarse and regular as in the last species. 

 Besides being smoother than L. bellula it is more inflated, 

 and is further distinguished by a microscopic punctate pattern. 

 The length of the figured specimen is 7 mm. and the height 

 4 mm. 



