222 Olive B. Davics: 



There is only one feature in the external description of this 

 iiuinial -which I deem Avorthy of special comment. On examining 

 the live animal, at first sight the smaller tentacle of each side ap- 

 pears bifui-cated or double, but on closer examination, the lower of 

 the two parts is seen to lie depressed inwai<ls at the tip, instead of 

 -ending in a little swollen knob, as the upper (h)es. This depression, 

 I think, is really the opening of a little gland, and I am told that 

 when the animal is crawling, mucus can be seen exuding from this 

 opening, but I have not observed this myself. Mr. Suter, in his 

 communications from NeAv Zealand, in the Journal of Malacology, 

 1899, Vol. VIII., PI. III., has drawn a figure of Rhytida green- 

 woodi, in which the " buccal papillae," as he names them, resemble 

 ihe structures in V. compacta more than any other I have seen. 



r. atratnentaria. 



The animal is much larger than /'. compacta. The shell is flatter 

 and of about the same colour, or, perhaps, a little lighter. The 

 animal itself is the same dark grey colour except at the edge of the 

 mantle and the foot, where it is coloured a brilliant oi-ange-red. 



I took the following measurements from an average specimen : — 



Shell, maj. diam. 31 mm., njin. diam. 26 mm.; height, 18 mm.; 

 sole of foot, 35 mm. long, 17 mm. broad; height of j^art outside 

 .shell, 12 mm. 



I liave not observed the tentacle in the living animal, but I have 

 ■one preserved specimen (Plate XV., Fig. II.), in which the two 

 pairs of tentacles are Avithdrawn, but on each side is a little papilla 

 ■(jn the under surface of w4iich is a groove. The left inferior tentacle 

 .an<l pajiilla of this specimen, Avas cut out and used for sections. 



In other carnivorous land Pulmonates, e.g., HhytUhi, structures 

 .spoken of as labial palps are developed; but these in Faryphaiita, 

 more especially in P. compacta. seem to me to be more nearly con- 

 nected Avith the tentacles than Avith the mouth. 



In their internal structiirc. the tAvo species resemble one another 

 A^cry closely, so that the one description may serve for either, except 

 AA'hen otherwise sta(e<l. 



Organs of the Mantle Cavity. 



The kidney is a large, roughly triangular, granular l)()dy, pinkish 

 ■giey in colour, lying on the dorsal side of the last Avhorl, at the 

 J)ack of the roof of the mantle cavity. 



The pericardium forms a pear-shaped sac, lying to the left of the 

 kidney. Tinough it the auricle and ventricle can be seen. 



The renopericardial canal, the ureter, and the rectum, occupy 

 J heir usual jmsitions, and present no points of special interest. 



