CURRENT LITERATURE. 43 



in the genital organs, jaw, radula and shell. The oldest known species is 

 from the Carboniferous of Nova Scotia, and is probably a member of the 

 genus Pyranu'ifiilii : and Mr. Pilsbry points out in confirmation of the age of 

 the Endodontidae that they have a wider geographic range than either the 

 Helicidae or Zonitidae. The origin of, and reasons for the present generic 

 distribution are carefully discussed, and Mr. Pilsbry concludes " that the 

 western portion of Asia, together with Europe and North America, is peopled 

 by a peculiar, highly-organised type of Helices practically confined to these 

 regions, but evidently derived from extreme south-east Asia or the East Indies 

 by a cretaceous (?) immigration." 



The systematic portion of the work is done with great care, though we 

 cannot help thinking that too many sections have been created in, or admitted 

 into, such groups as, for example, Eu'.ota. The disappearance of old and 

 familiar names, too, is a source of regret, though doubtless strictly w^arranted 

 and rendered necessary by the law of priority. Mr. Pilsbry admits five 

 epochs in the study of the terrestrial mollusca, namely : — Linnean, 

 Lamarckian, Ferussacian, Beckian, Albers-Martensian : there may now be 

 added a sixth, the Pilsbryan. E. R. S. 



Tryon, G. \V., continued by Pilsbry, H. A. — " Manual of Conchology," 

 2nd series, Pulmonata, Index to the Helices, pp. 1-126. May, 1895. 



ANATOMY. 



Babor, J. F. — " Doplnky k znamostem o ceskych slimacich." Sitz. Gesel 

 d. wiss. Math. Nat., Prague, T. xviii-xviiii., 1894, pp. 1-22. 



Bergh, Dr. — " Beitrage zur kenntniss der Strombiden besonders der gattung 

 TcrebcUum." Zool. Jahrb., vol. viii., pt. 3, 1S95, pp. 342-378, pis. xxii. 

 and xxiii. 



Bernard, F. — " Sur le developpement de la coquille des mollusques lamelli- 

 branches." Bull. Mus., Paris, vol. i, pp. 50-51. 

 Preliminary note of a paper about to appear in the Bull. Soc. Geol., 

 France. 



Chatin, A., and Muntz, A. — " Analyse des coquilles d' huitres." C. R , 

 vol. cxx., pp. 531-534 



Fuchs, S. — "Beitrage zur physiologic des kreislaufes bei denCephalopoden." 

 Arch. ges. Phys., vol. Ix., pp. 173-204, pis. vii.-ix. 



Garstang, W. — "On the gastropod Colpodaspis pusiUa of Michael Sars." 



Proc. Zool. Soc., 1S94, PP- 664-669, pi. xliv. 

 Hornell, James (edited by). — " Microscopical Studies, xvii. — Crcseis, a 



typical Pteropod." Journ. of Marine Zool., vol. ii., No. 5, pp. 19-24. 

 The Pteropods are now recognised as being opisthobranch Gasteropods, 

 but no mention is made of this fact, and the classification of the Mollusca is 

 decidedly out of date.— W. M. W. 



Kostal, J. — " Beitrag zur kenntniss des copulations-apparatus bei Limacopsis 

 coeriilans, Simroth (Bielz)." Sitz. Gesel. d. wiss. Math. Nat., Prague, 

 1894, T. xix.-xxii., pp. 1-15. 



Pace, S. — " Notes on the anatomy of Buliininus pyocteri, G. B. Sow., and 

 Bulimulus kopelli, G. B. Sow." Proc Mai. Soc, vol. i., 1895, pp. 

 229-231, figs. i-io. 



Pace, S. — " Notes on the anatomy of Natallna tvimeni, Melv. and Pons." 

 Proc. Mai. Soc, vol. i , 1895, pp. 232 and 233, figs. 1-4. 



Schmidt, Ferdinand. — " Beitrage zur kenntniss der entwicklungsgeschichte 

 der Stylommatophoren." Zool. Jahrb. Anat., vol. viii., pt. 3, 1895, 

 pp. 31S-341, 9 figs. 



