30 SPIRAXIS. 



obtuse; whorls nine and one-half, short, quite convex, with 

 a deep suture; aperture subovate, moderately acute above; 

 labrum thin and sharp. Mean divergence 12 ; length .3 

 inch; breadth .07 inch; length of aperture .052 inch." 

 (Adams). 



Jamaica : 



Bulimus terebella C. B. AD., Con* rib. to Conch, no. 2, p. 

 28 (Oct. 1849). REEVE, Conch. Icon, v, pi. 84, f. 620 (Dec. 

 1849). PFR., Monogr. iii, p. 401. Opeas t., PFR., Nomencl. 

 Hel. Viv. p. 322, no. 1001. 



C. B. Adams' description is given above. His type, a 

 single shell dead, but in good condition, is figured (fig. 11). 

 It is an imperforate, subulate, turrite shell, gray-white, with 

 the surface very weakly striate, the strife low, blunt, as wide 

 as the intervals or wider, and perfectly even and regular. 

 They begin in the middle of the second whorl, those above 

 being smooth. The second whorl appears disproportionately 

 large. The outer lip is strongly arched forward above the 

 middle. The last whorl is somewhat compressed laterally. 

 The cord-like columella has a weakly spiral convex fold above. 

 Length 7.9, cliam. 1.75 mm., with fully 9 whorls. 



The following is a synonym, as I have satisfied myself by 

 a careful comparison of the types. 



Bulimus striatella C. B. Adams. (PI. 1, fig. 8). Shell 

 small, thin, glossy, diaphanous, elongate; Whorls 7, convex, 

 ornamented with robust parallel striae. Aperture wide; lip 

 thin; columella not much twisted. Divergence 30 degrees, 

 length .2, width .07 inch. (C. B. Ad.). 



Jamaica: Pedro, St. Anns (J. S. Hyde in Adams coll.). 



Bulimus striatella C. B. AD., Synops. Conch. Jam., in Proc. 

 Bost, Soc. of Nat. Hist, ii, 1845, p. 13. B. striatellus Adams, 

 PFR., Symbols iii, p. 87; Monographia ii, p. 160 (1848) ; not 

 Buliminus striatellus Beck, Bulimus striatellus Pfr. 1842 

 (Symbols ii, p. 122). Bulimus confertus PFR. Monogr. iv, 

 p. 455 (1859). 



Adams' type, fig. 8, is figured. Length 5.5, diam. 1.7 

 mm., with 7% whorls. It differs from S. terebella only in 

 being smaller with fewer whorls, and is clearly identical 



