CO L ECTI N a C E PHALO POD A . 
Moll 37 
mud, moss, on the rough shells of larger Mollusca, &c. ; by F. de Folin, 
J. R, Micr. Soc. ii. p. 861, also Verh. z.-b. Wien, xxix. pp. 36-38, and 
Bull. Mosc. Iv. p, 202. 
Miscellaneous Publications. 
Ihering’s proposed “ natural system ” of the Mollusca [Zool. Rec. xiii. 
Moll. p. 19] is extracted in J. of Conch, ii. pp. 276-278. 
W. Kobelt has published a very incomplete Synopsis of the new 
genera, species, and varieties of testaceous Mollusks for the year 1878, 
copying the diagnosis of them, but limiting himself to nine periodicals 
and a few separate publications. 
Parts 6 & 7 of Kobelt’s popular treatise on the Mollusca, “ Illustrirtes 
Couchylienbuch,” discuss the Scutihranchia, Tectihranchia, Nudihranchia, 
and Pulmonata. 
R. Stearns criticizes an exaggerated description of a large Cephalopod 
in the “Popular Science Monthly,” January, 1879 ; and several incorrect 
statements in “Harper’s Magazine” and Webster’s “Dictionary” con- 
cerning Mollusca. P. Cal. Ac., April, 1879, 10 pp. 
CEPHALOPODA. 
The first volume of Tryon’s Manual of Conchology gives a very full 
account of the present state of our knowledge concerning the Cephalo- 
poda, recent and fossil, anatomical, biological, and systematic ; it contains 
descriptions and figures of all known recent genera (27) and species (241), 
taken from the original works, and a separate chapter on gigantic 
Cephalopods, containing the essential matter of all published accounts of 
them. An alphabetical index of all specific names, with quotation of 
author, title, and year of publication, adds to the utility of this treatise. 
The plates, 112 in number, are well done, and contain both anatomical 
particulars and figures of the whole animal, shells, and radula. 
Agnes Crane has given a general review of recent and fossil Cephalo- 
poda ; Geol. Mag. (2) v. [1878] pp. 487-499. 
J. Brock tries to make out the pedigree of recent Cephalopods, taking 
into consideration the symmetry or asymmetry of the oviducts, the cartil- 
ages in the mantle, the communications of the ganglion stellatum and 
the buccal ganglions, presence or absence and the size of the ink-bag, and 
the nidaraental glands, &c. ; be comes to the conclusion that the oldest 
dibranchiate Cephalopods were rather similar to the recent jdEgopsidce, 
but provided with a shell like Belemnites, and that they had ten essenti- 
ally equal arms ; that the Octopods form the first lateral ramification of 
them ; that afterwards the Myopsidce separated themselves from the 
common stock, and that in the latter the shell was still further reduced, 
Spirilla and Sepia being older forms than Loligo. As to Nautilus, he 
thinks that it is rather near the common primitive form of the Di- 
scad Tetra-hranchiata', . a pair of gills was, according to him, lost by the 
Dihranrhiata, not added by the Tetrahranchiata ; the symmetry of the 
