232 



PROCEEDINGS OF THE MALACOLOGICA,L SOCIETY. 



NOTES ON THE ANATOMY OF NATALIXA TRIMENI, Mel v. and Pons. 



By S. Pace, Royal College of Science, London. 



Mead January Wth, 1895. 



On purely conchological grounds this species was placed by its authors' 

 in the genus JErope \ = Natalina\. Through the kindness of Mr. J. H. 

 Ponsonby I have lately had an opportunity of examining the animal, 

 which agrees so closely in its anatomy with N. Cdjf'ra (Fer.) - and 

 N. Knysnaensis (Pf.)^ that there can be no doubt but that it really 

 does belong to that genus. 



Unfortunately the single spirit specimen I received had been re- 

 moved from its shell, minus the visceral sac, but it was otherwise in 

 fair condition when it reached me. I might mention that the specimen 

 was captured on the beach at Koega, 40 miles from Graham's Town, 

 S. Africa. 



Simplified fisrure of dissection from the right side after removal of the reproductive 

 ortjans. F. foot; (K. oesophagus; P. ])(>dal gland ; II. radula sac; S. salivary 

 gland. II. The genital organs removed from the body hut otherwise undisturbed. 

 A. albumen gland; H. and 11^. hermaphrodite duct; S. spermatheca ; V. vae 

 deferens. III. Another view of part of II., showing the origin of the vas 

 deferens (V.). IV. Complete half-row of the radula. 



> Ann. and Mag. (s. 6) x. (1892) p. 237, pi. .xiii. fig. 1. 



"^ I'ilsbrv, Proc. Acad. Phibid. 1890, ])p. 41-3, pl.'i. figs. A-F. 



3 Pilsbry, Proc. Acad. Philad. 1889, pp. 277-8, pi. i.x.'figs. A-D. 



