262 Transactions. — Zoology. 



There yet remain two rare species which are anatomically 

 unknown — viz., P. gilliesi, Smith, and P. lignaria, Hutton. 

 A knowledge of the anatomy of these species is much to he 

 desired, and I trust the collector who may have the good 

 fortune to secure them will not neglect to preserve the 

 animals. 



In the allied genus Bhytida the teeth of the majority of 

 the species have been described and figured, but, with the 

 exception of two species, B. greenivoodi, Gray,* and B. 

 meesoni, Suter,f nothing is known of their general anatomy. 



EXPLANATION OP PLATE XXVII. 



Paryphanta busbyi, Gray. 



Fig. 1. Buccal mass, salivary glands, and portion of the alimentary 

 canal. 



Fig - 2 "l Teeth 

 Fig. 3. ) leetn - 



Fig. 4. Generative organs. 



Fig. 5. Sectional view of portion of the generative organs, with transverse 



sections a, b, c, d. 



Abbreviations. 



alb. g. Albumen gland. ovd. Oviduct. 



ant. r. m. Anterior retractor p. Penis. 



muscles. pr. Prostate. 



ant. vg. Anterior vaginal chamber. r. m. Retractor muscle. 

 b. m. Buccal mass. 

 h. d. Hermaphrodite duct. 

 h. g. Hermaphrodite gland. 



ms. Muscular tissue connect- ut. Uterus. 



ing the oviduct with v.d. Vas deferens, 



body-wall. vg. Vagina. 



ces. GSsophagus. vg. p. Vaginal papilla. 



s. g. Salivary gland. 

 s. d. Salivary duct. 

 st. Stomach. 



Akt. XXV. — On the Occurrence of Paludicella in New 



Zealand. 



By A. Hamilton. 



[Read before the Otago Institute, 11th November, 1902.] 

 In volume xii. of the " Transactions of the New Zealand 

 Institute "J I noted the finding of a species of Plumatella in 

 one of the rivers of Hawke's Bay. I have since found the 

 same species [Plumatella repens) occurring plentifully in the 

 Water of Leith and other streams near Dunedin. Within the 

 last few months, however, another fresh-water Polyzoon has 



* Collinge, I.e., pp. 66-68, pi. i., figs. 1-16; Murdoch, Proc. Malac. 

 Soc. London (part 4), vol. iv., pp. 166-168, pi. xvii., figs. 5, 6. 



f Murdoch, Proc. Malac. Soc. London (part iv.), vol. iv., p. 168, 

 pi. xvii., fig. 7. 



t p. 301. 



