QO. 
0. 
136 
sis (Petiver) dOrb.) station: on rocks in 7—10 feet 
water; habitat: Guadeloupe; Beau pg. 21! Antilles 
Rio - Janeiro; Patagonia d’Orb.! Jamaica; Florida; St. 
Thomas; Ad.! Virgin-Islands; Swift! Krebs! 
Ostreacea. 
Ostrea L. 1768. 
arborea Ch. (Mulleria Fer., O. radicum Ch., O. rhizo- 
phorae Ch., QO. parasitica Gm.) station: in lagoons 
and creeks on the root of Avicennia and Rhizophora ; 
habitat: Antillae; Mérech pe. 62! Cuba; Jamaica; Ad.! 
Guadeloupe; Beau pg. 21! Virgin-Islands; Swift! 
cristata Born. station: — ? —; habitat: Guade- 
loupe; Beau pg. 21! 
frons L. Ch. (O. transtra Meusch., rubella Lmk., lima- 
cella Lmk., erucella Lmk., folium (.) d’Orb.) station: 
on the roots of trees in lagoons and creeks; habitat: 
Cuba; Martinique; Guadeloupe; St. Lucy; St. Domingo; 
New - Orleans; d’Orb.! Guadeloupe; Beau pg. 21! Ja- 
maica; Tortola; Ad.! Virgin-Islands; Swift! Krebs! 
rostralis Lmk. station: — ? — ; habitat: Gua- 
deloupe; Beau pg. 21! 
spretad Orb. station: — ? —; habitat: Rio-Janeiro; 
Cuba; dOrb.! remark: moll. de Cuba 2—365 pl. 28 
fig. 30. 
spec. ind. No 1 from St. Croix and Guadeloupe, in 
the cabinets of R. Swift & H. Krebs; Swift says: it 
approaches Q. cucullata Born in Lmk. an. sans vert. No 34. 
Placunanomia Broderip 1832. 
echinata? Brod. (P. abdominalis Gray) station: bet- 
ween the branches of corals; habitat: Guadeloupe ; 
Beau pg. 21! Virgin-Islands; Swift! 
