224 On the Anatomy o/'Apera Burnupl, E. A. Smith. 



short thin tube above {v.d.), wliich probably represents the 

 vas deferens. In Schizoglossa, according to Hedley (5, p. 390), 

 the penis is " represented bj a slight bulbous swelling near 

 the orifice, a vas deferens arising therefrom, and a short 

 muscle attaches this swelling to the nearest point of the body- 

 wall." In Apera there is a large and peculiarly shaped 

 receptaculum seminis ; its lower portion, forming the recepta- 

 cular duct, opens into the vagina as a wide sac, above this it 

 becomes narrowed, the receptaculum seminis here commencing 

 and forming a large hook-shaped body (PL V. fig. 6, r.s.). 

 The free oviduct is about the same length as the penis and 

 vas deferens together, only slightly wider ; it forms the direct 

 continuation of the vagina (PI. V. fig. 6,/.oy.). The common 

 duct is of considerable length, much convoluted and folded 

 upon itself. The albumen-gland is pyriform in shape and of 

 median size. The hermaphrodite duct is a long tube shghtly 

 coiled in its upper portion. The hermaphrodite gland 

 consists of a series of glandular clusters, the outer portions of 

 which are villous (PI. V. fig. 6, h.gl.). 



References. 



1. Agassiz, L. Nomenclator Zoologicus (Mammals), 1842. 



2. BiNKEY, W. G. " On the Jaw and Lingual Dentition of certain 



Terrestrial Mollusks." Bull. Mus. Comp. Zool. Camb., U.S.A., 

 1879, p. 331. 



3. CoLLiNGE, Walter E. " The Morphology of the Generative 



System in the Genus Testacella:' Ann. & Mag. N. H. 1893, 

 vol. xii. pp. 21-25, pi. i. 



4. GoDWiN-AusTEN, H. H. " On the Molluscan Genus Paryphanta, 



and on the Anatomy of P. Hochstetteri, Pfr." Proc. Malac. 

 Soc. 1893, vol. i. pp. 5-9, pi. i. 



5. Hedley, Charles. " Schizoglossa : a new Genus of Carnivorous 



Snails." Proc. Linn. Soc. N. S. W. 1892, vol. vii. pp. 387-392, 

 pi. ix. 



6. Heynemann, D. F. " Ueber Chlamydepliorus, Binney." Jahrb. 



d. d. malak. Gesell. 1885, Jh. xii. pp. 17-20, T. 2. 



7. Lacaze-Duthiers, H. de. " Histoire de la TestacelU."' Arch. 



Zool. exp. et gen. 1887, t. v. pp. 458-596, pis. xxix.-xl. 



8. Smith, Edgar A. " Description of a New Species of Slug from 



South Africa." Ann. & Mag. N. H. 1892, vol. x. pp. 465-466. 



9. Wagner, A. J. "Die Arten des Genus Daudebardia, Hartmann, 



in Europa uud Westasien.'' Denksch. Akad. Wiss. Wien, 1896, 

 Bd. Ixii. pp. 609-626, 5 pis. 



EXPLANATION OF PLATE V. 



Fig. 1. View of posterior portion of the dorsum of Apera Burnupi, 



E. A. S., showing dorsal opening. 

 Fig. 2. The alimentary canal, &c. 

 Fig. 3. The pedal gland, viewed from above. 

 Fig. 4. Transverse section of the same. 



