Tornatellidse, and Pyramidellidse. 461 



addition, if even it is required, would be to state, that in some of 

 the Chemnitzice the basal conjunction of the tentacula produces 

 a slight veil or membrane under which the proboscidal muzzle 

 issues. Mr. Lowe writes, " pallio ecanaliculato ;" M. Loven says, 

 "processus pallii dexter canaliculatus." I have not observed this 

 canal in any of the species ; it may exist, and from its minuteness 

 have escaped detection, or be supposititious, from the effect of 

 the various changes in the posture of the animal. 



The following and some other species of minor note belong to 

 Chemnitzia: Turbinella albella, Loven; Odostomia turrita, Hanley; 

 Turbo nivosus, Mont.; T. insculptus, T. sandvicensis ; Helix are- 

 naria, Mont.; O. fenestrata, O. excavata, O. scalaris; T. elegan- 

 tissiimis, ]\Iont.; 0. scillce, O. acicula, O. formosa, O. affinis, O. 

 clavula, Rissua ? opalina, &c. &c. 



Eulima, Risso. 



This genus is in close alliance with Chemnitzia, but is distinct 

 in several points, and shows a nearer approach to the Muricidal 

 tribes by its proboscis strictly " recondcnda," which has a very 

 long, flat, unarmed tongue, and by the short tentacula conically 

 tapering, not being flat and triangular as in Chemnitzia, with less 

 approach to coalition at their bases, in the skin of which the eyes 

 are exactly medially fixed. The anatomy of the minute Chem- 

 nitzice is, I believe, unknown ; a comparison cannot be made with 

 Eulima ; we therefore only mention that in it there is an exces- 

 sively long vas deferens or epididymis ; we have dissected many 

 of the E. polita, but never found in the proboscis, or lingual 

 riband, the least appearance of spinous processes. It is probable 

 that the buccal apparatus of all the Chemnitzice are destitute of 

 the spinous tongue. The conchological alliance of this genus 

 with Chemnitzia is excellent, as it has the same inversion of the 

 apical volutions. 



Eulima polita, auctorum. 



Eulima nitida, auctorum. 

 Eulima distortu, auctorum. 



Animal of twelve to sixteen spiral turns, inhabiting a white, 

 highly polished, porcellanous, conically tapering, subulate shell ; 

 mantle white, fleshy, fully lining the aperture, but there is no 

 reflexion or extension of it to account for the perfect glabrous 

 aspect. Head moderately large, flatfish, not much produced ; 

 mouth below, vertically cloven ; the tentacula are short, conical, 

 pointed, nearly united at the bases, diverging gradually to their 

 terminations ; the basal halves are pure white, the summital por- 

 tions yellow or orange, sometimes of a greenish yellow ; the eyes 

 are large, and when the animal marches generally lie under the 



