dall: mollusca and bkachiopoda. 343 



U. S. S. "Albatross," station 3358, Gulf of Panama, in 555 fathoms, sand, 

 bottom temperature 40°.2 F. U. S. N. Mus. 123,055. 



This species is closest to L. carinata Cautraiuo, var. tricinguluta Locard, of 

 the Atlantic, from which it is most easily distinguished by its thinner shell and 

 three sharp and elevated instead of blunt and low spiral keels. 



These shells appear to be somewhat confused, and a little discussion of their 

 characters may throw some light on the subject. A sketch of the synonymy may 

 be prefixed to the other data. 



Leptothyra peloritana (Cantraine) s. s. 



Tnrho peloritanns Cantraine, Bull. Roy. Acad. Sci. Belg., 1836, 2, p. 387 ; Nouv. 



Me'm. Roy. Acad. Sci. de Belgique, 1841, 13, pi. 6. fig. 22. 

 Trochus Jilosus Philippi, En. Moll. Sieil., 1844, 2, p. 155, pi. 25, fig. 24 (not Trochus 



Jilosus Wood, 1828), Broun. Ind. Pal., 1848, 3, p. 1300. 

 Cantrainea peloritana Jeffreys, P. Z. S., 1883, p. 108. 

 Leptothyra carinata, var. peloritana Pilsbry, in Tryon, Man., 1888, 10, p. 252, pi. 63, 



fig. 24 (figure copied from Cantraine). 

 Leptothyra Jilosa Dautzenberg and Fischer, Mem. Soc. Zool. de France, 1890, 9, 



p. 473. 

 Turbo peloritanus Locard, Exp. du Travailleur et du Talisman, Moll. Test., 1898, 



2, p. 17, 1, pi. 21, fig. 31-32 (with variety ciugulata Locard. The variety 



is identical with T. Jilosus Philippi). 



Leptothyra peloritana var. glabrata Philippi. 



Turbo carinatus Cantraine, Bull. Roy. Acad. Sci. Belg., 1836, 2, p. 387 (not Turbo 

 carinatus Sowerby, 1821) ; Mai. Medit. in Nouv. Mem. de I'Acad. Belg., 1841, 

 13, pi. 6, fig. 23. 



Trochus glabratus Philippi, En. Moll. Sic, 1844, 2, p. 226, pi. 28, fig. 10; Bronn, 

 Ind. Pal., 1848, 3, p. 1301. 



Turbo erythrinus Galvani (fide Seguenza) in Nuovo Ann. d. Sc. nat. Bologna, 1845, 

 2d ser., p. 129. 



Cantrainea peloritana, var. carinata Jeffreys, P. Z. S. Lond., 1883, p. 108 ; Monte- 

 rosato, Norn. Conch. !Medit., 1884, p. 49. 



Leptothyra carinata Pilsbry in Tryon, Man., 1888, 10, p. 252, pi. 63, fig. 35 (figure 

 copied from Cantraine). 



Turbo peloritanus varieties major, minor, depressa, alta, tricingulata, atteiiuata, and 

 anfjulosa Locard, Exp. du Trav. et du Talisman, Moll. Test., 1898, 2, p. 18, 

 1897, 1, pi. 21, figures 28, 29, 30, 33, 34. 35, 36 (these varieties are all muta- 

 tions of the original T. carinatus). 



In the Jeffreys collection we have a fine series of this species both recent and 

 fossil, as well as a large series of the LeptoiAyrti albida Dall, from various 

 localities in the vicinity of the West Indies, dredged by the " Albatross," 



" Blake," and others. 



