12 Moll. 
MOLLUSCA. 
Ingold, E. G-. List, of Land and Freshwater Mollusca occurring in 
the neighbourhood of Bishops Stortford. Tr. Ess. Club, iv, 
pp. 215-217. 
Jackson, R. T. (1) Phylogeny of the Pelecypoda. The Aviculidce and 
their Allies. Mem. Bost. Soc. iv, No. vii, pp. 277-400, pis. xxiii-xxx, 
many woodcuts. 
* ■. (2) Studies of Pelecypoda. Am. Nat. xxiv, pp. 1132-1142, 
woodcuts. 
Abstract of paper in Mem. Bost. Soc. iv, pp. 277-400. 
James, Joseph F. On Variation, with Special Reference to certain 
Palaeozoic Genera. Am. Nat. 1889, pp. 1071-1087. 
Contains many references to Mollusca. The essay points to wide- 
spread evidence for variation, and suggests that the disappearance of a 
genus may often be due to its breaking up into new genera, through 
the specialization of characters incipient in the original genus. 
Jenkins, A. J. (1) Distribution and Habits of the British Uydrobice. 
Sci. Goss. 1890, pp. 103-106, woodcuts. 
. (2) Physa acuta (Drp.) in Scotland. J. of Conch, vi, p. 270. 
Ihering, H. von. (1) 1st Planorbis links oder rechts gewunden? Nachr. 
mal. Ges. 1890, pp. 43-46. 
. (2) Ein vermeintliches Mollusk ( Entocolax ). T. c. p.46. 
— — -. (3) Revision der von Spix in Brasilien gesammelten Najaden. 
Arch. f. Nat. 1890, i, pp. 115-170, pi. ix. 
Johnson, C. W. An Annotated List of the Shells of St. Augustine, 
Flor. Naut. iii, pp. 103 & 114 ; iv, p. 4. 
Marine shells. 
Jones, T. Rupert. (1) On some Small Bivalve Shells from the Karoo 
Formation, South Africa. Geol. Mag. 1890, pp. 409 & 410, wood- 
cuts. 
Lamellibranchs resembling Cyrena and Cyclas. 1 
. (2) On some Fossils from Central Africa. T. c. pp. 553-558, 
woodcuts. 
Shells resembling Iridince. 
Jordan, H. K. On the Species and Varieties of the Genus Fusus , which 
inhabit the Seas surrounding the British Isles. J. of Conch, vi, 
pp. 225-244. 
Joubin, L. Recherches sur l’Appareil Respiratoire des Nautiles. Rev. 
Biol, ii, pp. 409-428, pi. vii. 
Jourdan, E. Etude Anatomique sur le Siplionostoma diplochcetos , 
Otto. Ann. Mus. Marseille, iii, pp. 1-76, pis. i-iv. 
