ON THE ANATOMY OF PARYPHANTA URNULA, Prr., WITH NOTES 
ON P. HOCHSTEITERL, Prr., AND RHYTIDA GREENWOODI, Gray. 
By R. Murpocn. 
Read 14th November, 1902. 
Aw example of that rare species, Paryphanta urnula, Pfr., has recently 
been forwarded to me by my friend Mr. Henry Suter, of Auckland, 
for which my best thanks are here tendered to him. The specimen 
was preserved in alcohol, and in extracting the animal its apical 
whorls were broken off, but apart from this it is in a fairly good 
state of preservation. 
The animal is blue-black in colour, the anterior portion of the body 
being darkest. The ruge are irregular, somewhat larger on the 
neck and sides than on the tail. A minute line-like groove surrounds 
the foot-margin, as in P. Hochstettert. The foot is comparatively 
broad, with the tail acutely pointed and flattened above. The foot- 
sole is a dirty yellowish-white in the middle area, becoming darker 
around the margins. The mantle has a sharp, even margin, which 
is of a darkish colour, and from the under side of the mantle project 
to right and left, small fleshy ridges or lappets. The tentacles are 
completely retracted, and the labial projections much contracted and 
not very distinct. The genital pore is in the usual position. A small 
portion of the vagina is everted, and the orifices of the male and female 
organs appear to be distinct. 
The buccal mass is large and similar to the corresponding organ in 
other members of the group; the cesophagus enters in the anterior 
third and has a small salivary duct on either side. The salivary 
glands are oblong, compact masses, readily separated. The dentition 
has been described and figured by Suter,’ and the radula before me 
agrees perfectly with his description. 
The kidney is somewhat tongue-shaped, the posterior half yellowish 
in colour, while the anterior portion is white, thin, and semi-transparent. 
The ureter follows a similar course to that in Helix; but the rectal 
portion is open. The pericardium is about one-third the length of the 
kidney, and situate on the left, slightly concave, side of the latter. 
The outer wall of the pulmonary chamber is semi-transparent, and 
the venation, with the exception of the pulmonary vein, is very 
indistinct. 
1 Trans. New Zeal. Inst., vol. xxiv, p. 286, pl. xx, fig. 1; Journal of Malacology, 
1899, vol. vii, pt. 3, p. 51. 
