M. I,ueay.e-DnthiTs made interesting nl. s upon tin- 



lion of tin- Moat by lanthime in ca pt i vity ( A nn. > 



. Ann. M -liur 



Adams has also given . the habits of the \im. 



Mag. N. Hi-' C, 117). Dr. II usehenhrrger, in hi - 



around the Worl-1, p. -2\. remarks tint w'm n c.-ipl ured, the 

 lanthina emits about ,1'ul of violet, liquid, :m<l he 



supposes that this copious discharge, like the ink of the cuttle- 



lisii, () facilitate the esenpi- of the mollusk tVoin its 



enen 



(Jenus UK( 1 LT'/IA, Petit, I 



Shell palodiniform, thin, white under a hrown epidermis ; whorls 

 ventrieo-e ; ap Tture oblicpiely ov:ite, slightly efl'used at the I 

 peristome not continuous, the outer lip acute, ent ire, eolumella 

 olli(|iie, somewhat sinuous. Xo operculinn. 



Animal like lanthina, provided with ;i vehicular float. 



The species inhabit the Arabian Gulf and Pacific Ocean. 



Genus SCALITES, Conrad, 1842. 



Shell tiirriciilated, whorls flattened above, carinated at the 

 shoulder, and convex below; outer lip sinuous; umbilicus none 

 or very small. S. ANGULATUS, Conr. Silurian. United States. 

 (Struct, and Syst. Conch., t. 07, f. 51.) 



The systematic position given this fossil as well as its sub- 

 era, is mere guess-work. 



Subgenus RAPHISTOMA, Hall, 1847. 



Shell turbinated.more depressed, with carinated shoulder, and 

 convex below, as in the typical group. S. STAMIXEA, Hall 

 (Struct, and Syst. Conch., t. 67, f. ^- ). 



Subgenus HOLOPEA, Hall, IS 4 7. 



This p- group is i-ninposed of \\ is eleine, 



its (ii-M has been referred to Littorinid;e, another evi- 



dently 1 to Xaticid;e, a third resembles lanthina. The 



re mostl and tlieiv a))prars to be no good n 



for retaining the group. C'jrhra, Hall, 184."), h con- 



-ynonymous. 



