CURRENT LITERATURE. II 



Davenport, C. B. — Studies in Morphogenesis. I. On the develop, of the Cerata 

 in .Polls. Bull. Mus. Comp. Zool. Camb., U.S.A., 1893, pp. 141-8, 2 pits. 



D'Hardivillier. A. — Sur quelques faits que permittent de rapprocher le system 

 nerveux central des Lamellibranches de celui des Gasteropodes. Comptes 

 Rendus, 1893, vol. cxvii., pp. 250-2. 



Fischer, H. — Note sur quelques points de 1' histoire naturelle du genre Eutro- 

 chatella, P. Fischer (Prochatella, Swainson, 1840, 11011 Lesson, 1830). 

 Journ. de Conchyl., 1893, pp. 85-89, pi. iii. 



Godwin-Austen, H. H. — On the Molluscan genus Paryphanta, and on the 

 anatomy of P. hochstelteri, Pfr. Proc. Malac Soc. Lond., 1893, vol. i., 

 pp. 5-9, pi. i. 



P. hochstetleri, Pfr.. is very closely allied to P. Imsbyi, Gray, in this paper 

 the anatomy is carefully described, and illustrated by thirteen figures. Its 

 affinities with Testacella and Schizoglossa are dwelt upon, and for the three genera 

 Paryphanta, Plcea, and Schizoglossa, the author proposes a new sub-family 

 Parvpliantma:. further researches into the affinities of these genera and of the 

 Testace/lidie, will no doubt result in grouping them all under one family. 



Fig. 16 is of T. maugei, we think, although the form of the receptaculum 

 seminis and duct looks more like that of T. scutulum. The author in a foot-note 

 (p. 7) states : " I took it to be T. halio/idea." It "shows a close convolution of 

 the vas deferens for a short distance, and just where it first becomes a free tube." 

 On the plate and in the explanation it is given as T. maugei! — W. E. C. 



Hedley, C. — On Parmacochlea fischeri, Smith. Macleay Mem. Volume, 1893, 

 pp. 201-4, pi. xxvii. 

 This interesting species was described by Mr. Edgar A. Smith in 1884 

 (P. Z. S., p. 273, pi. xxiii. ). Mr. Hedley s specimen was one-third larger than 

 the original "Challenger" specimen, measuring — in spirit — 27 millim. He shows 

 that Tryon is wrong in associating Vitrina australis, Reeve, with this species, the 

 former not at present being known to inhabit Australia. The mantle lobes, though 

 more grown together than in Helicarion, have not become fused as in Cvstopelta. 

 A somewhat lengthy account is given of the radula. The shell and internal 

 structure are briefly described and figured. The convolutions of the vas deferens 

 are very numerous, and form an intricate mass spread along the base of the duct 

 of the receptacular seminis. "The chief peculiarities of the mollusc under 

 discussion are : the uncoiling of the whorls and the insertion of the intersutural 

 supplementary plate of the shell, the partial atrophy of the mantle lobes, the 

 numerous convolutions of the vas deferens, and the sac developed in the penis 

 near the origin of its retractor muscle. The resemblance, both external and 

 internal, of Parmacochlea to Helicarion calls for its classification beside that 

 genus in the sub-family Helicarioniiiir, whilst the differences between them clearly 

 entitle it to generic rank. The abnormal shell induces me to support a descent 

 and divergence from some form very similar to Helicarion robustus, Gould." 



Kohler, August. — Beitrage zur Anatomie der Gattung Siphonaria. Zool. 

 Jahrb., 1893, Bd. 7, pp. 1-92, pis. i.-vi. 



Metcalf, M. — Contributions to the Embryology of Chiton. Stud. Biol. Lab. 

 John Hopkins Univ., 1S93, v °l- v - > No. 4, 2 pits. 



Oswald, Ad. — Der Riisselapparat der Prosobranchier. Jen. Zeit. f. Nat., 1S93, 

 Bd. xxviii., pp. 119-62, T. v.-vi. and woodcuts. 



Plate, Ludwig H. — Studien iiber du Opisthopneumonische Lungensehnecken. 

 Zool. Jahrb., 1893, Bd. 7, pp. 93-234, T. vii.-\ii. 



Stauffacher, Heinrich. — Eibildung and Furchung bei Cyclas csrnea, L. Jen. 

 Zeit. f. Nat., 1893, Bd. xxviii., pp. 196-246, T. xi.-xv. and woodcuts. 



Vayssiere, A. — Etude zoologiques du Weinkauffia diaphana. Journ. de Conchyl., 

 i 8 93> PP- 9°-97> pl- iv. 



