290 PEOCEEDINGS OF THE GEOLOGICAL SOCIETY. [Feb. 21, 



28. Pleitrotoma Baeretti, spec. nov. PL XYII. fig. 6. 



Shell solid, fusiform, elongate, whorls 9-10, carinate, spirally keeled 

 and striated ; keels visible on the upper whorls three, with 3-4 

 intermediate striae, decussated by lines of growth ; second and largest 

 keel decurrent, with the notch divided by an obsolete groove ; aper- 

 ture elongate ; canal long, straight. 



A shell like P. virgo, but with more acute keels. 



There are some small shells in the collection which I take to be 

 the young of this species. In these the cross striae between the 

 keels are more distinct and more delicate. 



29. Pleurotoma Jamaicense, spec. nov. PI. XYI. fig. 6. 



Shell ovate-turreted ; whorls stoutly transversely ribbed below 

 the small round keel which follows the suture; the interstices 

 between the ribs crossed by numerous fine striae, which are decus- 

 sated by still finer striae ; aperture rather narrow ; outer lip some- 

 what thickened ; anterior canal very short ; posterior canal scarcely 

 forming a notch in the peristome. 



This shell belongs to a type which has several recent representatives 

 both in the West Indies and on the West Coast of America. Its 

 nearest relative is perhaps P. granulosa, Sow., from Panama. 



30. TeREBEA IISTJEQITALIS, SoW. 



Quart. Journ. Geol. Soc. vol. vi. p. 47. 

 The Jamaican examples are small and fragmentary. 



31. Phos Moorei, spec. nov. PL XYI. fig. 11. 



Shell ovate-turreted, conical, with longitudinal distant ribs which 

 are cancellated by transverse costas rising into tubercles upon the 

 longitudinal ribs; whorls 9, rather convex, increasing gradually; 

 spire sharp, regularly turreted; aperture ovate; columella some- 

 what twisted; outer lip internally distantly grooved; peristome 

 crenate, blunt, somewhat sinuate anteriorly ; canal short, open. 



This species is so close to P. Veraguensis, Hinds, that it was at 

 first considered by Mr. Carrick Moore as a variety of that species ; 

 an opinion which he subsequently modified. 



32. Phos elegans, spec. nov. PL XYI. fig. 13. 



Shell conical-turreted, elongate, cancellated by longitudinal and 

 transverse ribs, the latter rising into tubercles upon the former, 

 which are the largest and most distant; whorls 8, convex, gra- 

 dually increasing ; aperture ovate ; columella somewhat twisted ; 

 outer lip simple, blunt, grooved within. 



33. Cerithium: plebeixtm. Sow. PL XYI. fig. 9. 



Quart. Journ. Geol. Soc. vol. vi. p. 51. 



34. iN'ATiCA suBCLAusA, Sow. PL XYIII. fig. 8. 



Quart. Journ. Geol. Soc. vol. vi. p. 51. 



35. Natica SULCATA, Bom. PL XYIII. figs. 14, 15. 



iV. cancellata, Gmel. ; Keeve, C. I., Natica, No. 95. 



