BIBLIOGRAPHY OF 1878. 361 



To the former list are added a Liniax, a Hyalina, a. Cionella, 

 2 species of LwifKza, 2 of Pianorbis, a Valvata, and 2 species 

 of Hydi'obia. The paper concludes with a number of additional 

 remarks on Helix Caniiana and other species. 



Heller (Prof C.) Contributions tothe fuller knowledge 



of the Tunicata. — Sitzungsberichte der k. ak. d, Wissen- 

 schaften. Section I, Mathematics — Natural Science, vol. 

 Ixxvil, part 2, Feb. 1878. 6 plates. 



Hesse (P.) — Contribution to the Molluscan Fauna of 

 Westphalia. — Verhandlungen der Naturhistorischen Vere- 

 ines der preussihchen Rheinlande und Westphalens — 35th 

 year, vol. v., part I, (Bonn : Max Cohen & Son, 1878.) 



Ihering (Dr. H. von.) — Contributions to the Anatomy of 



Chiton. — Morphologisches Jahrbuch, vol. iv., 1878. 



JeflFery (William) Land and Freshwater Mollusca of 

 Sussex. — Zool. May 1878, vol. ii., 180 and 181. 



A list of 14 species additional to Mr. Jeffrey's list of West 

 Sussex mollusca, published in 1868 (Zool. May), i Paludina, 

 2 Helix, I LijJincBa, 1 Ancylus, 2 Fhysa, 5 Plmiorbis, 1 Fisiditim, 

 and I Unio. 



Jeffreys (J. Gwyn, LL.D., F.R.S.) — Notice of some shells 

 dredged by Capt. St. John, R.N., in Korea Strait. — 



Jour. Linn. Soc, Zool. 1878, vol. xiv., 418 to 423. 



Dr. Jeffreys gives remarks on numerous species common to 

 the Northern portions of the Atlantic and Pacific Oceans, and 

 their probable common origin in the Arctic Ocean, the method of 

 dispersion being a bifurcation of the Arctic Current. Capt. St. 

 John's dredgings confirm this view. 



Jeffreys (Dr. J. Gwyn, F.R.S.)— Notes on some British 

 Land and FreshwaterShells. — Annals and Mag. N. H., 

 Nov. 1878, pp. 377 to 382. 



Dr. Jeffreys discusses Dr. Baudon's monograph of Succinea 



