TROPHON. 61 



6. interstriatus, f. 6, Sowerby. — Testa elongato-fusiformis, 

 T. clathrato similis,sed gracilior, inter varices spiraliter leviter 

 striata ; varieibus ad angulum subnodosis. — The only speci- 

 men I have met with being in rather bad condition, I only 

 name it as above provisionally. The varices have a little 

 knob at the angle, and the interspaces are very slightly 

 spirally striated. The whorls are more scalariform, and the 

 last smaller in proportion to the bulk of the shell than in 

 the preceding species. 



7. CEPtJLA, f. 14, 27, Sowerby. — Testa alba, gracile bulbi- 

 formis laavis ; spira acuminata, anfractibus declivibus, sub- 

 angulatis, varieibus tenuibus subnumerosis, superne angulatis ; 

 ultimo anfractu subventricoso,in canalemangustum recurvum; 

 longiusculum terminanti. — This species differs from T. clath- 

 ratus in being more bulb-shaped, having the canal narrow, 

 long and recurved, with shorter bulk for the last whorl, and 

 having the varices thinner and more numerous. 



8. PYbricii, f. 15, 16, Beck. (Borealis, Reeve). — Testa sub- 

 elongato-fusiformis, subcasruleo-alba, semipellucida, spira- 

 liter inter varices sulcata, varieibus distantibus ad suturam 

 elevatis, ad angulum anfractuum subangulatis, spira acu- 

 minata, elevata ; anfractibus declivibus, ultimo subovato ; 

 apertura pyriformi; canali breviusculo. — Distinguished by 

 rather distant spiral grooves between the laminated varices. 



9. truncatus, Mont, f. 2, 42, 43, 43*, Pennant. — Testa 

 ovata, albida, lsevis, varieibus laminatis lasvibus, simpliciter 

 arcuatis, crebris ; spira subacuminata, anfractibus leviter 

 convexis ; apertura subpyriformis, canali truncato. — The 

 larger shell, f. 2, is not spirally striated quite so distinctly 

 as represented. All the varieties of T. clathratus have 

 more or less of the vaulted angle that is fully developed in 

 var. Gunneri ; but in this species there is no indication of 

 such angle. 



10. scalariformis, f. 38, Gould. — Testa T. clathrato 

 similis, sed varieibus crassis, obtusis, haud laminatis. — It 

 seems uncertain whether the original figure and description 

 of this doubtful species were taken from a much worn 

 and corroded specimen of T. clathratus, without the sharp- 

 edged lamina. 



11. candelabrum, f. 11, Reeve. — Testa breviuscula solida 



