CURRENT LITERATURE. 23 



position of the muscles and intestine it resembles the American genus Frophysaoyi, 

 but (lifters in possessing a penis, showing an affinity in this character, with Hesperarion. 

 In the more primitive genera of Arionidce e.g. Ariolima.r, the pharyngeal and 

 ocular retractors approach the condition found in the Limacichv. 



I'rof. Pilsbry is of opinion that the Arionidce ''not only do not possess the 

 characters of primitive shell-less forms, but the series of recent genera unmistakably 

 indicate their descent from a group with well-developed spiral shell," in fact we must 

 look to the Endodontidic for the ancestral root of the Ario'Hidic. 



Although there will be much difference of opinion as to the conclusions reached 

 by Prof. Pilsbry, the paper is an important one, and full of points of interest, which 

 are worth working out in greater detail than has here been attempted. — W. E. C. 



Pilsbry, H. A. & Vanatta, E. G.— Materials toward a natural Classification of 

 the Cylindrelloid Snails. Proc. Acad. Nat. Sci. Phila., 1898, pp. 264-86, 

 pis. 17-18. 



Rath. 0. VOm. — Fehlen den .Sexual zellen der Zwitterdriise von Hclir pomatia 

 die Centralkorper ? Zool. Anz., 1898, Bd. 21, pp. 395-6, 413-15. 



Dr. vom Rath describes in the sex-cells of//, pomatia distinct central corpuscles 

 which are clearly visible in the quiescent stage and also in mitosis. 



Rawitz, B. — Die Fussdriise von Gasteroptcroii mcckelii, Kosse. Internat. 

 Monatschr. f. Anat. u. Phys. , 1S9S, Pd. 15, pp. 199-205, 2 figs. 



Rolle, H. — ^ Eine neue Pomatia. Nachr. d. d. Mai. Gescll, 1S9S, pp. 91-92. 

 [ P. pdagoncsica. ] 



Simroth, H. — Ueber muthmassliche Mimicry beim japonischen Philomycus. Ber. 

 d. Naturf. Gesell. Leipz., 1897 (1898), pp. 3-7. 



SiHlPOth, H. — Ueber die Gattung Livuix in Russland. L'Ann. du Mus. Zool. d. 

 I'Acad. Imp. of Sc. St. Petersb. , 1898, pp. 52-67. 



Short descriptions of the following new species of Russian Limaces are given : — 

 L. turkcstanus, L. daghcstanus, L. ananowi, L. caucasicus, L. amalioidcs, L. 

 colchicus, L. simplex, L. valcntini, L. bacri, and L. retowskii. 



Standen, R. — Mollusca. Irish Pield Club Union. Kenmare Conference. Irish 

 Nat., 1868, pp. 218-29, I pi. 



Unlike the majority of lists of shells, this contains much interesting information 

 on the habitats and distribution of various species. 



SuteP, H. — Revision of the New Zealand Eissoiidcc. Prac. Malac. Soc. Lond., 

 1898, vol. iii, pp. 1-8, figs. 1-5. 



P. hamiltoni, P. fumaia, P. lubrica, P. foveauxiana, and Barleeia neozelanica, 

 are new (Coll. of H. Suter). 



Sykes. E. R. — Description of two new species of Clausilia from the Province of 

 Che-kiang, China. Proc. Malac. Soc. Lond., 1898, vol. iii, pp. 63-64, figs. 1-2. 



C. timallhca and C. lahijrinthoides, both from Kiu-chau. 



Sykes, E. R. — List of the Species Catatdus found in Ceylon, with descriptions of 

 some new land-shells from that island. Ibid., pp. 65-75, pi. v. 



Sykes, E. R, — The Zoological Record, London, 189S. Record vii, MuUusca 

 pp. 1-78. 



Mr. Sykes, assisted by Messrs. E. A. Smith and G. C. Crick succeeds Mr. B. 

 B. Woodward, one of the most able recorders that has been connected with this 

 invaluable publication. 



The classification adopted is that so carefully planned by Mr. Woodward, with 

 this deviation, the groups of the Hclicidcc have been suppressed, thereby making 



