1866.] GUPPY JAMAICAN- MOLLTJSCA. 291 



36. JSTatica mammillaeis, Lam. 



Lamarck, An. s. vert. (ed. Desh.) vol. viii. p. 628 ; Eeeve, C. I. 



JSTatica, m. 29. 



I do not feel sure of this identification ; but as the fossil seems to 

 have been referred to this species, I am not at present able to suggest 

 an amendment. 



37. Natica phasianelloides, D'Orb. PI. XYII. fig. 1. 



D'Orbigny, Paleontologie de Cuba, pi. 1. f. 7. 



Shell ovate-globose, smooth, scarcely rimate; spire elevated; 

 columellar callus narrow, its margin sinuate on the penultimate 

 whorl. 



Although D'Orbigny has not, as far as I can ascertain, pub- 

 ished any text explanatory of his plates of Cuban fossils, and 

 although the specimen figured by him is only a cast, I beheve the 

 present shell to be identical with the species to which I have referred 

 it. It seems to be very characteristic of the West Indian Miocene, 

 and occurs in a perfect state in San Domingo, and as casts in 

 Anguilla and Trinidad. The Jamaican example is small, and has 

 lost its spire. This fossil belongs to that group of Naticce so well 

 represented in the Eocene of Europe by N. ambulacrum, Sow., 

 N. Jiyhrida, Desh., and N. acuta, Sow. It has a somewhat taller 

 spire than any of these. The absence of an umbilicus and the 

 elevated spire seem to indicate for it a place in the group Amaura, 

 MoUer (1842). 



38. TuEBO CASTANETJS, Chcmu. 



The fossil is remarkable for retaining some of the chestnut colour 

 characteristic of the recent shell with which I am acquainted under 

 this name. It seems to be the T. liippocastaneus of Lamarck. It is 

 certainly not the form known as T. crenulatus, Gmel. {T. articulatus. 

 Reeve) ; but whether the latter is to be considered a variety or not, 

 I am not now prepared to state. 



39. SOLAEIUM QUADEISEEIATUM, SoW. 



Quart. Journ. Geol. Soc. vol. vi. p. 51, pi. 10. f. 8. 

 Eine examples of this species occur in Jamaica. 



40. Cyclosteema bicaeinata, spec. nov. PI. XYII. fig. 5. 



Shell discoidal, broadly umbilicate ; whorls concave beneath, flat 

 above, with four small spiral keels on the flat upper part, the 

 periphery formed by two larger and more distant spiral keels, 

 including between them a somewhat concave smooth spiral area; 

 peristome continuous. 



41. Neeitina "Woodwaedi, spec. nov. PL XVIII. figs. 4, 5. 



Shell oval-globose, flattened, with coarse lines of growth ; spire 

 wanting; mouthVery narrow, semilunate ; columella -lip very broad, 

 flat ; columella simple, slightly curved, and furnished with an obso- 

 lete tooth-Hke projection anteriorly. 



