66 Mr. W. E. Collinge on the Anatomy of 
History and Philosophical Society for defraying the cost of 
the drawings illustrating this paper. 
The anatomy of the Agnathous Pulmonates has received 
but little attention ; hence anything like a classification based 
on anatomical characters is at present quite impossible. 
Woodward * has given an interesting account of Natalina 
caffra, Fér., and other contributions to the anatomy of this 
genus have been made by Pilsbry t and Pace ¢. Godwin- 
Austen § has given an account of the anatomy of Puryphanta 
Hochstettert, Pfr.; but I am unable to confirm many of his 
statements. Other references to the anatomy of the Austra- 
lian and New Zealand species are to be found in the various 
papers of Hedley and Suter. 
Ruytipa, Albers. 
Rhytida Greenwoodi, Gray. (PI. I. figs. 1-16.) 
Animal yellowish brown, darker on the dorsum anteriorly ; 
a deep groove characterizes the median dorsal line beyond 
the visceral mass. Mantle yellow, with irregular black 
markings; collar shows slight indications of division into 
right and left mantle-lobes. Eyes situated some little 
distance backward from the end of the upper tentacle. Male 
generative orifice 10 millim., female generative orifice 
11 millim. from the right upper tentacle. Rugz on the head 
almost square, on the sides of the body anteriorly round, in 
parallel lines in both cases; posteriorly very small and irre- 
gular. Sulci faint sepia-colour or white. Peripodial groove 
ill-defined. Foot-fringe whitish, with very minute sepia- 
coloured spots. Lineoles absent. Foot-sole not distinctly 
divided into median and lateral planes, laterally sepia- 
coloured, dirty white in the median portion. 
Length (in alcohol) 38 millim. 
Hab. Levin, Manawater, New Zealand. 
This species, the type of the genus, was described by Gray 
in 1849 ||. All the descriptions yet given, such, for example, 
as those by Reeve {j, Pfeiffer **, Hector ff, Hutton tt, and 
* Proc. Malac. Soc. Lond. 1895, vol. i. pp. 270-277, pl. xvii. 
u Proc. Acad, Nat. Sci. Philad. 1889, pp. 277-279, and 1890, pp. 241- 
243. 
¢ Proc. Malac. Soc. Lond. 1895, vol. i. pp. 282-238. 
§ Op. ett. 1898, vol. i. pp. 5-9, pl. i. 
|| Proc. Zool. Soc. 1849, p. 165. 
{| Conch. Icon. vol. vii. sp. 434, pl. Ixxxi. fig. 434, 
*# Mon. Hel. viv. vol. iii. p. 156. 
t+ Catal. Land Moll. N. Zeal. 1878, p. 18. 
tt Man. N. Zeal. Moll. 1880, p. 16. 
