328 VEEMETIDJ5. 



of which are of light yellow and subelliptical form. The tongue 

 was not detected, though, without doubt, one, of the invariable 

 spiny character, exists. 



The tentacula are short, rather thick, subcylindrical, setose, 

 and slightly clavate at the extremities; the eyes are very 

 minute, black, not raised on any kind of pedicle or eminence, 

 and placed nearly in a line with the tentacula at a short 

 distance from their bases, and if there is a divergence there- 

 from, the tendency is external. 



The slender neck, as in most of the other Gasteropoda, is 

 furnished with longitudinal ridges ; and in this species, on each 

 side of its centre, there are two frosted, pale yellowish-white, 

 contiguous raised lines, forming a very decided canal or groove, 

 the points of which terminate anteriorly at the immediate 

 base of the eyes, and posteriorly at the furthest end of the 

 rieck, on the left side of which, at the usual point, may be 

 seen a minute pale red branchial leaflet, which puts on the 

 appearance of there being two, a larger and a smaller one, as 

 in the canaliferous Gasteropoda. But here, though we cannot 

 vouch that there are not two, we are inclined to think there 

 is only one, with a divergence from its base of a part of its 

 surface ; the very marked canal seems necessary for the en- 

 trance of the branchial water, in consequence of the neck of 

 the animal., when at rest, being so closely embraced by the 

 fleshy muscular circular mantle, but in marching order it is 

 protruded to an extraordinary extent. 



The stomach was distinctly observed, and is an oblong 

 bursiform organ, yellowish-white and granular without, but 

 on being opened presents a dark lead-coloured cavity, fortified 

 by strong transverse muscular bands or fillets. From it arises a 

 very long convoluted intestine, which when extracted exhibited 

 the usual ftecal matters ; it appeared to coast the liver and ova- 

 rium, amongst the folds of which it makes a double, as is usual 

 with the regular Gasteropods, and then progresses to the right 

 side, where the minute, elongated, oval, conically-pointed 

 pellets were observed to be ejected. 



The ovarium is dark red-brown, aspersed with very mi- 

 nute darker points, like the finest sand, with its posterior 



