134 PERCY SLADEN TEUST EXPEDITION, 



459. Cardium (Fragum) simillimum. Smith. 



Loc. Saya de Malha Banks : Stations C 2, 123 fathoms, C 4, 150 fathoms, on broken 

 shell and rough hottom. 



A very delicate, elegant species, of the same character as C. {Fulvia) peramabilis. 

 Ball *, from the W. Indies and Florida (' Blake ' Expedition), or C [Fraguni) 100-liraium, 

 Melv. & St., from the Persian Gulf {Townsend). 



460. Cardium [Fragum) crenelloides, sp. nov. (Plate 5. fig. 13.) 



C. testa alha, papyracea, inflata, suhquadrata, sequivalvi, insequilaterali ; margine 

 dorsali postice recto, antice rapide declivi, margine postico ohlique expanso ventralem 

 apud marginem, latere antico subangulato ; umhonibus tumidis, quam maxime 

 contiguis ; superficie undique longitudinaliter delicatissime costulata ; costis 38-40, 

 arctissime squamatis, squamis saepe evanidis, postice breviter minute spinulosis. 

 Alt. 8, lat. 9, diam. 6 mm. 



Loc. Cargados Carajos : Station B 20, 28 fathoms, coarse coral-rubble bottom. 

 Two examples, perfect, and differing only in size, of a pure white, fragile, papyraceous 

 shell, trapezoid in form, and very swollen, paiticularly at the umbones, which are closely 

 approximate to each other. The whole surface is many-ribbed longitudinally, with 

 oblique costse, thirty-eight to foi'ty in number ; these are closely scaled, and shortly 

 spinulose posteriorly. The superficial likeness in form to a Crenella suggests the 

 specific name. 



461. Cardium {Fragum) roseolum, sp. nov. (Plate 5. fig. 14.) 



S. testa minuta, sequivalvi, intequilaterali, fere squarrosa, tumida, rosea ; margine 

 dorsali recto, postice abbreviate, vcntrali cum dorsali parallelo, antice rotunde 

 breviter expanso ; umhonibus contiguis, superficie omni delicatissime costulata ; 

 costis longitudinalibus obliquis ad 40, arctissime squamatis, squamis regularibus, 

 fere imbricatis, baud evanidis. 

 Alt. 7, lat. 6, diam. 5 mm. 



Loc. Cargados Carajos : Station B 20, 28 fathoms, with the preceding. 

 Nearly allied to C. crenelloides, described above, but of different form, being of a 

 squarrose contour, the posterior margin much shortened, the ventral and dorsal well- 

 nigh parallel. The whole surface is closely scaly-ribbed ; these ribs are 40 in number, of 

 much the same character as exists in crenelloides, save that they appear more persistent 

 and imbricate, not being of so delicate a substance. The margin of the valves also is 

 more deeply serrate or pectinate than in the allied species, of which, indeed, it might be 

 considered a variety, but the great differences of form and colour — a clear rose — have 

 prompted the differentiation. 



462. Cardium (Lcevicardium) hiradiatum, Brug. 



Loc. Amirantes : Station E 9, 34 f&thoms, among Polyzoa, &c. 



Seychelles : Station E 2, 31 fathoms, coral and shell-rubble. 

 Extends in range to the Philippine Isles. 



* Bull. Mus. Comp. Zool. Harvard (1885-86), p. 269, pi. 4. fig. 7. 



