DALL: MOLLUSCA AND BRACHIOPODA. 343 
_ U.S. 5S. “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 Z. carinata Cantraine, var. ¢ricingulata 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. 
Turbo peloritanus Cantraine, Bull. Roy. Acad. Sci. Belg., 1836, 2, p. 887; Nouv. 
Mém. Roy. Acad. Sci. de Belgique, 1841, 13, pl. G. fig. 22. 
Trochus filosus Philippi, En. Moll. Sicil., 1844, 2, p. 155, pl. 25, fig. 24 (not Trochus 
Jilosus Wood, 1828), Bronn. Ind. Pal., 1848, 3, p. 1800. 
Cantrainea peloritana Jeffreys, P. Z. S., 1883, p. 108. 
Leptothyra carinata, var. peloritana Pilsbry, in Tryon, Man., 1888, 10, p. 252, pl. 63, 
fig. 24 (figure copied from Cantraine). 
Leptothyra filosa Dautzenberg and Fischer, Mém. Soc. Zool. de France, 1896, 9, 
p. 478. 
Turbo peloritanus Locard, Exp. du Travailleur et du Talisman, Moll. Test., 1898, 
2, p. 17,1, pl. 21, fig. 31-82 (with variety cingulata Locard. The variety 
is identical with 7. filosus Philippi). 
Leptothyra peloritana var. glabrata Putvierr. 
Turbo carinatus Cantraine, Bull. Roy. Acad. Sci. Belg., 1836, 2, p. 887 (not Turbo 
carinatus Sowerby, 1821); Mal. Medit. in Nouv. Mém. de l’Acad. Belg., 1841, 
13, pl. 6, fig. 28. 
Trochus glabratus Philippi, En. Moll. Sic., 1844, 2, p. 226, pl. 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, Nom. Conch. Medit., 1884, p. 49. 
Leptothyra carinata Pilsbry in Tryon, Man., 1888, 10, p. 252, pl. 63, fig. 35 (figure 
copied from Cantraine). 
Turbo peloritanus varieties major, minor, depressa, alta, tricingulata, attenuata, and 
angulosa Locard, Exp. du. Trav. et du Talisman, Moll. Test., 1898, 2, p. 18, 
1897, 1, pl. 21, figures 28, 29, 30, 83, 34, 35, 36 (these varieties are all muta- 
tions of the original TZ. 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 Leptothyra albida Dall, from various 
localities in the vicinity of the West Indies, dredged by the “ Albatross,” 
‘* Blake,” and others. 
