364 BIBLIOGRAPHY OF 1878. 



The vegetable enemies enumerated include Zostera marina L. 

 Ceramium rubrum Ag., Ulva lactiica L., Cerufnium diaphanum 

 Roth., C. Icztevirens Kg., and various Diatomacese. The list of 

 animal enemies includes crabs {Polylnns Hetislowei Leach, and 

 Carcinns Mcznas, Penn.) Y\'aViQ.'a( Carcharias glaiicus Qmn., Trygon 

 pastinaca Cuv., and Crenilabrus viridis lu.J MoUusca ( Murex 

 erinaceus L., and Na.ssa 7-eticulata Desh.^, Echinoderms (Asterias 

 rubens Gmel.y), Crustacea (Palcemon squilla Edw. and Talittus 

 saltator Edw.j the mussel (My til us edulis h.J various marine 

 worms (a Filarian one, and Arenicola piscaiormn Lk.), Polyps 

 and Ascidians. Numerous diseases are also described and named. 



Owen (Prof.) — Memoir on the relative positions to their 

 constrictors of the chambered shellsof Cephalopods. 

 — Zool. Soc, Nov. 19th, 1878. 



Packard (A. S., junr.) — Some characteristics of the Zoo- 

 geographical province of the United States. — Amer. 

 Nat, Aug. 1878, vol. xii., p. 512 to 517. 



This paper though not dealing specially with moUusca will 



yet be of considerable interest to the malacologist. 



Pfeffer (Dr. George.)— Contributions to the knowledge of 

 the Hermaphroditism and the Spermatophores of 

 Gasteropoda. — Archiv fiir Naturgesch, 44th year, vol. I, 



part 3. I plate. 



Poulsen (Dr. C. M.) — Catalogue of West India Shells in 

 the collection of Dr. C. M. Poulsen, of Copenhagen. 



— 8vo., p. 16. 



This list includes 353 land and freshwater, and 800 marine 

 species from various West Indian localities. 



Bars (G. O.)— Molluscan Fauna of Arctic Norway.— 



Bidrag til kundskaben om Norges arktiske fauna, I, MoUusca 

 Regionis Arcticae Norvegise. — Christiania, 1878, 8vo., p. 466. 

 May and 52 autographic plates. 



