420 Deep-sea Trawling off the S.W. Coast of Ireland : scales. The right pectoral very small, about as long as the eje ; the left pectoral is reduced to a minute ray. The ven-trals, also, are small, but the extremities of their middle rays extend backwards to the anal fin. The dorsal and anal terminate immediately in front of the caudal. Scales of both sides ctenoid, more so on the coloured than on the blind side. Coloration uniform grey. This species is distinguished by charactei's which bring it near to Solea vulgaris as well as to Solea variegata. From the former it is separated by the rudimentary structure of its pectoral fins, from the latter by the number of its fin-rays, by its much smaller scales, and by its coloration. Unfortunately only one specimen was obtained, nearly 6 inches long, at a depth of 150 fathoms. It is in a perfect state of preserva-tion. MOLLUSCA. By Edgar A. Smith. Of the twenty-four species enumerated in the following list, nearly all were obtained by the ' Porcupine ' expedition off the west coast of Ireland or in other parts of the North Atlantic, and have been recorded by Jeffreys in his series of Eeports in the Proc. Zool. Soc. 1878, 1879, 1881-85. It would therefore be of little use now to give references and distribution in full, which may be obtained by consulting the papers referred to. The collection only affords slight addi-tional evidence with regard to geographical and bathymetrical considerations. The fine DentaUum and Sipho, the LyonsieUaj and the new Cuspidaria are perhaps the most interesting of the additions to the Museum collection. Cephalopoda. Rossia Oweniij Ball. From 150 to 200 fath. Rossia sublceviSf Verrill. From 250 fath. Eledone cirrosay Lamarck. From 150 fath.