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Show 1906.] MOLLUSKS FROM THE PERSIAN GULF. ^ 4 7 Order Y. SEPTIBRANCHIATA. Fam. C u s p id a r i id ^e. CuSPIDARIA APPROXIMATA Smith. Cuspidaria approximatct E. A. Smith, Ann. & Mag. Nat. Hist, ser. 6, vol. xviii. p. 373 (1896). P.G. Gulf of Oman, Maskat; 10-15 fathoms, not scarce. Also lat. 24° 49' N., long. 56° 56' E .; 225 fathoms. I. Lat. 15° 25' N., long 71° 45' E .; 240 fathoms. This is probablv synonymous with C. hrcichyrhynchus Stur. (1899). C u sp id ar ia a l co c k i Smith. Cuspidaria alcocki E. A. Smith, Ann. & Mag. Nat. Hist. ser. 6, vol. xiv. p. 170, pi. v. iig. 8 (1894). Cuspidaria potti Sturany, Exped. S.M. Schiff Pola' in das Rothe Meer (1899), p. 10, Taf. i. figs. 10-16. P.G. Gulf of Oman. Lat. 25° 30' N., long. 57° 30' E.; 85 fathoms. Lat. 25° 51' N., long. 56° 54' E. ; 156 fathoms. M.C. Lat. 25 10' N., long. 60 34' E .; 40 fathoms off Cliarbar; not infrequent in shell-sand. Small examples, apparently not full-grown, have so far only been obtained in this latter locality. When adult, this is one of the most beautiful of the genus. C u s p id a r ia e l eg a x s Hinds. P.G. Gulf of Oman. Lat. 24° 58' N., 7 lon^o- . 56° 54' E .7; 156 fathoms. Only in imperfect condition, and very rarely occurring. We expected fully that the deep seas of the Gulf of Oman would have yielded more interesting Cuspldarice than has yet been found to be the case. Dr. Sturany, for instance, described five species from the Red Sea (‘ Pola ' Expedition), two of which only are in our gatherings. In all other families and genera the results, we consider, come quite up to the highest expectations. In conclusion, we would express our best acknowledgments to all those who have in one way or another, through so many years, assisted us in the preparation of this Catalogue; and would primarily mention Mr. Edgar A. Smith, I.S.O., Mr. Ernest R. Sykes, F.L.S., the late Dr. W. T. Blanford, F.R.S., Dr. W. Healey Dali, Dr. Rudolf Sturany, Mr. Stephen Pace, F.Z.S., Mr. A. J. Jukes-Browne, F.G.S., Mr. (4. B. Sowerby, F.L.S., Mr. A. Abercrombie, Mr. Hugh Fulton, Mr. J. Wilfrid Jackson, Commander E. R. Shopland, Lt.-Col. II, D. Olivier, Miss Maud Olivier, Captain A. J. Peile, Mr. E. H. Aitken, Mr. E. Comber, |