sro.lllO. PROCEEDINGS OF THE NATIONAL MUSEUM. 321 



ALABA TURRITA, Guppy, new species. 

 (Plate XXVIII, fig. 7.) 



Shell elongate-turrited ; whorls about 9, spirally Urate by somewhat 

 obsolescent ridges ; two rather broad varices on each whorl ; not con- 

 tinuous on successive whorls ; spire pointed; aperture suboval, slightly 

 notched; peristome subcontinuous; columella expanded. Alt. 5, lat. 

 L\25 mm. [G.] 



Oligoceneof Jamaica, Vendryes (Guppy,2137). Ko. 107128, U.S.IS^M. 



SOLARIUM, doubtful species. 



Orbicular, discoidal, depressed, widely umbilicate; surface corrugated 

 by undulate rather flattened radiating ridges, narrower than their 

 interstices and rising into tubercles on the angle of the whorl; crossed 

 by revolving or spiral furrows, dividing the surface into somewhat 

 square tesseraj; first 2 or 2i whorls quite smooth; apex depressed; 

 umbilicus encircled by rows (3) of strong rounded tubercles formed by 

 a continuation of the sculpture on the flattened upper surface of the 

 whorls. Alt. 1, lat. 3 mm. |G.j 



Ditrupabed, Pointapier, Trinidad, Guppy (22.54). No. 107126, U.S.KM. 

 The i)resence of this very young specimen, which shows only enough 

 of the adult characters to determine its place in the groufj of ^S^. elah- 

 oraitim, Conrad, sufiBces to establish the presence of the group in the 

 fauna, though not to characterize the species. 



RISSOA (ALVANIA) PARIANA, Guppy, new species. 



(Plate XXIX, fig. 9.) 



Shell conic-oblong, turrited; whorls about 6, decorated by about 4 

 spiral ribs narrower than their interstices, upon which rise into points 

 somewhat stout longitudinal costje forming subquadrate or oblong pits, 

 in which some faint stri;e may be observed; apex smooth; base with 

 about 4 spiral ribs; lip stout, expanded. Alt, 2.3, lat. 1.5 mm. [G.] 



Ditrupabed, Pointapier, Trinidad, Guppy (2257). No. 107127, U.S.N.M. 



BENTHONELLA TURBINATA, Guppy, new species. 

 (Plate XXVII, fig. 10.) 



Turbinate subrimate, longitudinally sinuate-costate; whorls about 

 5, the apical ones (about 2) (piite smooth, the others strongly ribbed 

 by sinuate costic, their wider interstices crossed by minute spiral stride 

 which are not visible on the ribs; aperture ovate; columella reflected. 

 Alt. 1, lat. 0.78 mm. [G.] 



Ditrupabed, Pointapier, Trinidad,Guppy (2139). No. 107077, U.S.N.M. 

 The presence of this genus {Hcla of Jeffreys) in these beds is almost 

 conclusive evidence of their deep water or archibenthal character. 

 Proc. K. M. vol. xix 21 



