304 JOUKXA.I. OK CONCHOLOGY, VOI.. II, NO. lO, APRIL, I906. 



On removing the mantle cavity the visceral mass is seen rising as a 

 conical projection behind, while the outline of the buccal mass is 

 clearly visible in front. The visceral mass lies quite freely in the 

 cavity formed by the wings, not touching them at the sides and being 

 free for a distance of 5 mm. behind. At that point it is attached to 

 the foot by a large muscle which enters it medianly. It is yellow in 

 colour and seerns to be composed of the liver, of the hermaphrodite 

 gland, which is mixed with the liver in parts, and of the mucous 

 gland, which is opaque, solid and not ramified. The liver is a mass 

 of minute ramified tubes and encloses a small round stomach. The 

 course of the intestine is partly visible in the liver, and it terminates 

 in a low anal papilla situated on the visceral mass, a little to the right 

 of the median line. The central nervous system is very difficult to 

 see but is apparently as in Bergh's plates of L. antillarum. The eyes 

 are visible externally only in one specimen and are situated just below 

 the rhinophores on the outer side. 



Text Fig. 2. — Three teeth of LopJiocercus viridis. 



The buccal parts are much as described and figured by Bergh for 

 Z. antillanan. The anterior portion is in some specimens roundish, 

 in others distinctly divided into sacculations. The posterior portion 

 is yellowish, semitransparent, with a faint longitudinal groove and 

 twelve bright white transverse lines. The buccal crop is proportionally 

 somewhat smaller than in Bergh's figures. Both it and the anterior 

 part of the buccal chamber are distinctly divided into two halves on 

 the lower side. The radula is of the usual ascoglossan type, but the 

 teeth remain more or less in line and do not fall into a confused 

 heap. In a large specimen there are to teeth in the ascending series 

 and 30 in the descending ; in a small specimen there are 8 teeth in 

 the ascending series, 13 in the descending, and 14 in the heap, but 

 still more or less in position. (Text Fig. 2). They resemble those 

 of L. antillarum, but are perhaps somewhat straighter, and the 

 serrulations even finer. The oesophagus is very thin. From its upper 



