ANTILLEAN OPEAS. 203 



but Quoy & Gaimard's clavulus is surely 0. gracile (q. v.). 



I have already alluded to the distribution of 0. goodalli in 

 the Old World, see pp. 141, 151, 157. 0. hannensis Rang 

 and 0. braueri Mts. may perhaps prove to be synonyms. 



Stenogyra ascendens Poey, renamed B. assurgens by Pfr., 

 is stated by Poey to differ from 0. goodalli by having the 

 right margin ascending at the suture ; the shell agreeing in 

 other Respects with goodalli. This was probably an individual 

 feature, as no conspicuous ascent is noticeable in specimens 

 sent out by Poey, or in Pfeiffer's figures, or in the Cuban 

 specimens collected by myself in 1903. B. pumilus Pfr., from 

 Havana or Matanzas provinces was based upon a small 0. 

 goodalli, as Pfeiffer himself recognized later. It measured 

 1.8 x. 66 lines. 



C. B. Adams included specimens of 0. goodalli with some 

 other species in his B. pauperculus. See under Spiraxis. 



0. aciculcE forme Miller is evidently a synomym. The ori- 

 ginal figures are copied, pi. 28, figs. 66, 67. "Shell scarcely 

 perforate, subulate, straw-colored, with very arcuate fine striae, 

 but little shining; spire conic, the apex rather obtuse. 

 Whorls 71/0, nearly flat, parted by a lightly impressed suture, 

 the last whorl two-sevenths the length. Columella straight. 

 Aperture slightly oblique, ovate-oblong, acuminate above, re- 

 ceding below ; peristome simple, the right margin straightened, 

 receding above and below, columellar margin narrowly re- 

 flexed, adnate above; the margins subparallel. Length 7, 

 diam. 2, aperture 2x1 mm. Distinguished from 0. rarum 

 by the flat whorls, the shallow and very oblique suture, the 

 outer lip which is not arcuate above, and the growth-lines 

 which above bend backwards to the suture ; also by the slim, 

 needle-shaped contour " (Miller). 



Ecuador: Guayaquil (Wolf). 



ANTILLEAN SPECIES. 



A few forms of Opeas, none of them well known, have been, 

 described from the West Indies, in addition to the generally 

 distributed 0. gracile, micro,, beckianum and goodalli. 



