13 
with D. lymnaeiformis K. from which C. B. Adams, 
once in a eonversation, acknowledged not to be able to 
distinguish it without by the locality; we do not acknow- 
ledge this to be a suficient argument to establish species 
on and we really regret that such doctrins have been 
able to enter, to multiply and to confuse the nomen- 
clature and the sciense. 
Magnelia Risso. 
antillarum Reeve. station: — ? — 3; habitat: 
West-Indies; Reeve! 
. angulata Reeve. station: —?—; habitat: —?—; 
Reeve! remark: we have found a species at St. Tho- 
mas, which approaches the drawing in Reeve’s Ic. conch. 
very much. 
. badia Reeve station: dead specimens between stones 
and species of corals in 2 feet water; habitat: — ? 
Reeve! St. Thomas; Krebs! remark: see M. cras- 
sicostata Ad. ! 
. balteata Reeve. station: in mud from 6 to 8 feet 
water; habitat: -?—; Reeve! St. Thomas; St. Barth; 
St. Martin; Anguilla; Krebs! 
. biconica Ad. station: —? —; habitat: Jamaica; 
C. B. Adams! : 
. biconicavar. alba Ad. station: — ? —; habitat: 
Jamaica; C. B. Adams! 
. brevis Ad. station: — ? — ; habitat: Jamaica; 
C. B. Adams ! 
. candidissima Ad. station: —? —; habitat: Ja- 
maica; C. B. Adams! St. Thomas; Bland! 
. crassicostata Ad. station: — ? — ; habitat: 
