CORYPIIELLA. 75 



nana, Alder and Hanc. purpurascens, Flem. 



natans, D'Orb. rubra, Cantr. 



olivacea, Alder and Hanc. stipata, Alder and Hanc. 



pallida, Alder and Hanc. tricolor, Forbes. 



picta, Alder and Hanc. viridis, Forbes. 



pinnata, Eschsch. vittata, Alder and Hanc. 



Genus FAVORINUS, Gray. 



Tentacles long, with a single sub-terminal fold or bul- 

 bous ring near their slender tips; labial feelers elongate, 

 linear. Gills in tufts on each side. Front angles of foot 

 greatly produced, subulate. 



Si/n. iEolis, sp. Alder and Hancock. 



Ex. F, albus, Alder and Hancock, pi. GO, fig. 3. 



In this genus the end of the tentacles resembles a cup, 

 with a truncate cylindrical process arising from the bottom ; 

 the front angles of the foot are developed and subulate, mid 

 the labial palps are very much elongated. 



Genus CORYPIIELLA, Gray. 



Tentacles subulate, smooth ; labial feelers or oral tenta- 

 cles elongate, subulate. Gills in tufts or clusters. Foot 

 sub-angular in front. 



Syn. iEolis, sp. Alder and Hancock. 



Ex. C. Landsburgi, Alder and Hancock, pi. GG, fig. 4. 



The tentacles in Cori/phclla are simple, and the gills are 

 iu clusters along the sides of the body ; the oral feelers are 

 greatly produced, and the front of the foot is not angulated. 



