Zoological Society. 71 



the tentacles connate at the base, with the eyes near their distal 

 third ; the foot is dilated in front, forming an elevated shield, acutely 

 auriculate on each side, pointed behind, and ending in a single long 

 filament. Operculum small, horny, and unguiform. In three species 

 of this genus in which I have observed the animal, namely Phos 

 senticosus, roseatus, and Blainvillii, the hind part of the foot ter- 

 minated in a single median filament, and not, as in Nassa, in a 

 bifurcate tail. 



1. Phos senticosus, Linn, sp.; List. PI. 967. fig. 22. 

 Buccinum senticosum, Linn. 



Phos senticosus, Montfort. 

 Hab. Philippine Islands ; H. C. 



2. Phos Blainvillii, Desh. Chemn. pi. 125. f. 1201, 1202. 

 Kiener, Mon. Buccinum, pi. 11. f. 38. 



Buccinum pyrostoma, Reeve. 

 Hab. Philippine Islands ; //. C. 



3. Phos Cumingii, Reeve, Elements of Conchology, pi. 3. fig. 16. 

 Hab. ? 



4. Phos crassus, Hinds, Zool. Voy. Sulphur, Moll. p. 37- pi. 10. 

 f. 1, 2. 



Hab. Panama, Gulf of Fonseca. 



5. Phos virgatus, Hinds, I. c. p. 37. pi. 10. fig. 11, 12. 

 Hab. Ceylon. 



6. Phos retecosus, Hinds, I. c. p. 37. pi. 10. fig. 3, 4. 

 Hab. Ceylon. 



7. Phos veraguensis, Hinds, I. c. p. 37. pi. 10. fig. 13, 14. 

 Hab. Pueblo Nueva, west coast of Veragua. 



8. Phos articulatus, Hinds, I. c. p. 38. pi. 10. fig. 7, 8. 

 Hab. Panama. 



9. Phos roseatus, Hinds, I.e. p. 38. pi. 10. fig. 9, 10. 

 Hab. North coast of Sumatra. 



10. Phos gaudens, Hinds, I. c. p. 38. pi. 10. fig. 5, 6. 

 Hab. Gulf of Tehuantepec, west coast of Mexico. 



11. Phos cancellatus, A. Adams. P. testa ovato-fusiformi, 

 albidd, obsolete fusco fasciatd ; anfractibus subrotundatis, 

 lineis elevatis longitudinalibus et transversis, valdh cancellatis, 

 cancellis ad angulos acuth nodosis ; aperturd intus fuscatd, 

 antice tuberculoid, plied validd. 



Hab. 1 



This species resembles P. veraguensis ; but the areas between the 

 cancelli are simple, whereas in P. veraguensis there is an intermediate, 

 elevated line, crossing them, a circumstance not mentioned in the 

 description of Mr. Hinds. 



12. Phos turritus, A. Adams. P. testa ovato-fusi for mi, tenui, 

 subpellucidd, spird turrit d, acuminata, albido-fuscatd ; anfrac- 

 tibus rotundatis, costis longitudinalibus angustis numerasis, 



