MONOGRAPH OP THE GENUS 

 PHOS, Montfort 



Thes. Condi., Plates CCXXL, CCXXII. 



Char. Gen. Testa acuminata, subfusiformis, costis longitudinali- 

 bus et sulcis spiralibus decussata ; spirit turrita ; apertura sub- 

 ovali; canali brevi, varicem tortuosum formante; labio interno 

 tenui; columella rugosa, versus basin oblique uniplicata; labio 

 externo intiis sulcato, antice sinuato. Operculum parvum, cor- 

 neum, unguiforme. 



Chiefly differing from Nassa in form, and in the absence of a 

 point or notch at the base of the columella. The hinder part of 

 the foot is not, as in Nassa, bifurcate. 



Species. 



1. senticosus (f. 8, 9, 10, 11), Linn. (Buccinum). — P. testa py- 

 ramidali, fusca sen fulva seu albida, medio anfractuum unifasciata, 

 minute scabrosa, liris elevatis subdistantibus ad angulum anfrac- 

 tuum super costas subspinosis cinctu ; spira producta ; anfractibus 

 superne subangulatis, distanter valide costatis; canali varicoso, 

 brevi. — The spiral elevated lines are produced into angular points 

 on the ribs. Philippines, Cuming. 



2. muriculatus (f. 12), Gould, Japan Expecl. — P. testa P. 

 senticoso simili, sed anfractibus rotundatis, costis inermibus. — Re- 

 sembling P. senticosus, but the whorls rounded, and the spiral 

 costella^not raised into points. Red Sea. 



3. angtjlatus (f. 7), Sowb. Thes. — P. testa crassa, P. senticoso 

 simili, sed anfractibus magis angulatis, costis inermibus. — More 

 angular than P. senticosus, but otherwise resembling P. nmricula- 

 tns. Possibly however the three are but variations of the same 

 species. Philippines, Cuming. 



VOL. III. K. 



