R: 
54 
maica; Ad.! remark: described in ,Proc. of the Boston 
Soe. of Nat. History*. Ist January 1845 page 6. 
dubiosa Ad. station: — ? —; habitat: Jamaica; 
Ad.! St. Thomas; Th. Bland! remark: deseribed in 
»Contributions* No 7 page 114. 
eulimoides Ad. station: — ? —; habitat: Ja- 
maica; Ad.! remark: described in .Contribution* No 7 
page 115. 
. gemmulosa (Odostomia) Ad. station: —? —j; ha- 
bitat: Jamaica; Ad! 
gradata d’ Orb. station: in the sand of the beach; 
habitat: Jamaica; d’Orb.! remark: described in ,Mol- 
lusque de Cuba* part 2d. page 23. 
laevigata Ad. (Rissoina; Moéhrenstern) station: — ? 
—; habitat: Jamaica; Ad.! St. Thomas; A. H. Riise! 
remark: described in .Contribution* No 7 page 114. 
laevissima Ad. (Rissoina; Méhrenstern) station: —? 
— ; habitat: Jamaica; Ad.! St. Thomas; Bland! A. 
H. Riise! remark: described in ,Contribution* No 5 
page 115. 
melanura Ad. station: —?—; habitat: Jamaica; 
Ad.! St. Thomas; A. H. Riise! Guadeloupe; Trinidad; 
St. Martin; St. Croix; St. Thomas; Krebs! remark: 
we agree with C. B. Adams, who has described this 
species in ,Contribution* No 8 page 116, that it is not 
a Rissoa and we take it to be the shell described by 
d’Orbigny as Eulima incerta, but he himself doubts it is 
an Eulima; we doubt it to be eather a Rissoa or an 
Eulima; we have specimens with two and three strongly 
eveloped varices on each whorl and in some few spe- 
cimens are the varices forming two or three continuous 
SSS 
