55 
rows from the, in the most cases, black nucleus until 
the last whorl. 
R. multicostata Ad. station: —? — ; habitat: Ja- 
maica; Ad.! remark: described in the ,,Contribution“ 
No 7 page 114, in which Ad. refers to Rissoina elegan- 
tissima d@Orb., with which we consider it synonyme — 
Professor C. B. Adams, who has contributed so much to 
the evelopment of the natural history of the West-Indies 
and who, by his practical way of collecting and arranging 
as he collected, has done more for the knowledge of the 
geographical destribution of the marine shells on both 
sides of the american continent, than any man of science 
before him, had quite a sickly passion for descri- 
bing ,supposed new shells*, by which he, as well 
as many of his contemporaries, has confused and bur- 
thened the science with innumerable synonymes, which 
men of science in future days will have trouble to find 
through. 
R. ovuloides (Odostomia) Ad. station: — ? — ; ha- 
bitat: Jamaica; Ad.! 
R. princeps Ad. station: —? —; habitat: Jamaica; 
Ad.! remark: described in his ,Contribution* No 7 page 
116. where he says it is allied to R. albida Ad. 
R. pulchra Ad. (Rissoina acc. to Mohrenberg) station: 
— ? — ; habitat: Jamaica; Ad.! St. Thomas; Th. 
Bland! A. H. Riise! St. Barth; Krebs! remark: des- 
eribed by C. B. Adams in Contribution No 7 page 
114; very near allied to Rissoina Sagraina d’Orb.! and 
Rissoa cancellata Phil. 
R. pusilla Desh. station: —? —j; habitat: Cuba; A. 
H. Riise! 
R. solida (Odostomia) Ad. station: — ? — ; habitat: 
