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 Fhos 

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

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

 bifurcate tail. 



1. Phos SENTicosrs, Linn, sp.; List. PI. 96/. fig. 22, 

 Buccinum senticosum, Linn. 



Phos senticosus, Mont fort. 

 Hab. Philippine Islands ; H. C. 



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

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



Buccinum pyrostoma, Reeve. 

 Hab. Phihppine Islands ; //. C. 



3. Phos Cumingii, Reeve, Elements of Con chology, pi. 3. fig. 16. 

 Hab. ? 



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

 f. 1, 2. 



Hab. Panama, Gulf of Fonseca. 



5. Phos virgatus. Hinds, Lc. p. 37. pi. 10. fig. 1 1, 12. 

 Hab. Ceylon. 



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

 Hab. Ceylon. 



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

 Hab. Pueblo Xueva, west coast of Veragua. 



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

 Hab. Panama. 



9. Phos roseatus. Hinds, /. c. p. 38. pi. 10. fig. 9, 10. 

 Hab. North coast of Sumatra. 



10. Phos gaudens. Hinds, I.e. 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 fuseo fasciatd ; anfractibus subrotundatis, 

 lineis elevatis longitudinalibus et transversis, valde cancellatis, 

 cancellis ad angulos acute nodosis ; aperturd intus fuscatd, 

 antich tuberculatd, plied validd. 



Hab. ? 



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 orato-fvsiformi, fenui, 

 subpellueidd, spird turritd, acvminatd, albido-fvscatd ; anfrac- 

 tibus rotundafis, costis longitudinalibus angustis numerofis, 



