1899.] >fATURAL SCIENCES OF PHILADELPHIA. 155' 



nucleus. Suture well impressed. Transverse ribs about 20, nar- 

 row, rounded, perpendicular, separated by wider, shallow spaces- 

 which are crossed by 5, wide, deep, spiral grooves. Body- whorl 

 slightly angulated at the periphery, rounded and elongated below, 

 crossed by two, Avide grooves, interrupted by the ribs, and below by 

 four or five, rather indistinct, raised, spiral threads and Avider 

 grooves. 



Length, 3 mm.; diameter, 1 mm; length of aperture, f mm. 



As the well impressed suture gives only a well-rounded summit, 

 and not a distinct shoulder, to the whorls, these specimens cannot 

 be examples of the true textUh, but are doubtless a variety of No. 

 72,051, from which they differ in having flatter whorls, more 

 tapered apex and little rounded base. The form of the aperture 

 in the variety is somewhat angular, expanded below with the 

 columellar-lip straighter, thin and reflected, forming an angle at 

 its juncture with the outer-lip. 

 Turbonilla fasciata d'Orbigny (?). 



Chemniizia fi(sciat<i d'Orbigny, Vov. Amer. Merid, p. 496, pi. 76, figs. 

 4-6, 1847 (?) ; Morch, Syn. Moll. Mar.'ind. occid., p. 164, 1875. 



Turbonilla fasciata Try on, Manual, viii, p. 331, pi. 76, fig. 25, 1885. 



Not ChrysaUida fasciata Carf>enter, 1857, nor Odostomia fasciata 

 Dunker, 1860, nor Bunker ia fasciata Tenison-Woods, 1875. 



A few specimens (12) from Bermuda differ from forms of 

 pvpoides in the greater size and prominence of the very oblique 

 nucleus and in the much shortened, little rounded base over which 

 the transverse ribs do not extend, but become evanescent near the 

 abruptly rounded periphery of the body-whorl. The aperture in 

 all of them is badly broken. The peritreme does not appear ta 

 be continuous and the pillar-lip is reflected and considerably thick- 

 ened, especially below. On some, there are slight indications of 

 spiral lines on the intercostal spaces. Eaised, rounded, spiral 

 threads ornament the base. 



Length of the largest example, 2| mm.; diameter, li mm. 

 Length of the smallest, 1^ mm. 



D' Orbiguy ' s original description and figures are not accessible to 

 me, but the above characters seem to agree with those given by 

 Try on. 



The line next the figure, indicating its size, as given by Tryou, 

 measures 5 mm., but in the text the size of the species is given as 

 3 mm. 



