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Show 262 MR. E. A. SMITH O N T H E [Apr. 1, COLUMBELLA (MITRELLA) CRIBRARIA, Lamarck. This species has a very remarkable distribution. Java Seas, Ascension Island, St. Helena, Goree, Guinea, Cuba, Barbadoes, Panama, and Mazatlan have been ascribed to it ; and the British Museum, besides specimens from Goree, St. Helena, Ascension, Panama, and Mazatlan, contains series from St. Vincent's, West Indies, Guatemala, and Amboyna. Those from Guatemala were described by Beeve under the name of C. delicata (Conch. Icon. pi. xxvii. fig. 171), but whether from the eastern or the Pacific coast is not stated. The series from Amboyna have that locality attached to them, but I am unable to discover the source whence they were obtained, and therefore cannot vouch for the correctness of the habitat. Dr. P. P. Carpenter, in his Catalogue of Mazatlan Shells, cites among the synonymy of this species the following :-Voluta ocellata, Gmelin ; Buccinum parvulum, Dunker ; Columbella mitriformis, Broderip and King ; and C. guttata, Sowerby. This appears to be a species which varies much in size. All the specimens from Ascension and St. Helena are small, averaging about eight or nine millimetres in length. They are almost invariably decollated, and have but four whorls remaining. The largest specimen from St. Vincent's, consisting of an equal number of whorls, is 12 millimetres long. The specimens from Goree, Amboyna, and Panama are, as a rule, broader, larger, and more solid than West-Indian or St. Helena examples. COLUMBELLA (MITRELLA) PUSILLA, Sowerby. Col. pusilla, Sowerby, Thes. Conch, vol. i. p. 144, pi. xl. figs. 182, 183 ; Beeve, Conch. Icon. pi. xx. figs. 109, 110, 112. Hab. West Indies (Sowerbg), island of St. Vincent, West Indies (Reeve). This species closely resembles C. lunata, Say, but is a trifle more slender, marked somewhat differently, has a more thickened labrum, and a more distinct sinus above. Tbe apex of this species is invariably brown, and the lip, especially the sinus, is usually tinted with the same colour along the edge. The single specimen from St. Helena was collected by J. Macgillivray. COLUMBELLA (MITRELEA) SANCT^E-HELEN^.. (PI. XXI. fig. 12.) Testa fusiformi-ovata, parva, albida, dilute fusco lineata maculata, frequenter infra suturam et circa medium anfr. ultimi niveo notata; anfr. 8-{J,primi 3-4 convexi, Iceves, parum convexi, slriis spiralibus, sub dist ant ibus insculpti, incrementi lineis striati,- anfr. ultimus infra peripheriam rotundatam contractus, oblique tenuiterque sulcatus; apertura angusta, longit. totius \ haud cequans; labrum mediocriter incrassatum, intus denticulis 7-8 munitum; columella callosa, prope medium tuberculopliciforme instructa; canalis obliquus, brevis, recurvus. Longit. 7\ millim., diam. max. 3. The spiral subdistant striae will readily distinguish this species |