26 CURRENT LITERATURE. 



The author here gives a careful, and fully illustrated, anatomical account of the 

 Helix group, described in a previous volume by Dr. O. F. von Mollendorff. In all 

 36 species or subspecies are dealt with, comprised in 1 1 genera and 3 families. The 

 greater portion of the work is devoted to the Eulotidac, and forms a valuable contri- 

 bution to the anatomy of this family. 



Monti, Rina. — Le Ghiandole Salivari dei Gasteropodi Terrestri nei diversi periodi 

 funzionali. Mem. R. 1st. Lomb. di. sci. e lett., 1899, vol. xviii (x, d. ser. iii), 

 pp. 115— 133> tav. ix. 



Miss Monti describes in some detail the structure of the salivary glands in Helix 

 2Mmatia and Acjriollynao: agrestis. They consist of a fibrillar connective tissue 

 stroma, and a parenchyma composed of large mucous, transparent, and granular cells. 

 The resting and active stages are carefully compared with one another, emphasis 

 being laid upon the fact that there are no signs of mitotic division. 



Monti, Rina. — Sur la fine structure de I'estomac des gasteropodes terrestres. 

 Archiv. Ital. Biol., 1899, T. xxxii, pp. I — 15. 



The epithelium lining of the stomach consists of a series of mucous laden calici- 

 form cells, and ciliated cylindrical cells. These are supported by fibrillar connective 

 tissue, large connective tissue cells, pigment cells, muscle fibres, and bloodvessels 

 lined with endothelium. Covering these come the layers of longitudinal and circular 

 muscle fibres, the whole being enveloped in a connective tissue sheath, in which are 

 a large number of ceils analogous to those of the sub-mucosa. 



Dall, W. H. — Synopsis of the Family Tellinidac and of the North American 

 species. Proc. U.S. Nat. Mus., 1900, vol. xxiii, pp. 285 — 326, pis. ii — iv. 



This valuable synopsis in addition to revising the North American species, includes 

 descriptions of figures of species which have hitherto not been reported from the 

 coast of the United States, or have not previously been figured. There are also 

 descriptions and figures of the following new species : T. georgiana, iheringi, 

 americana, 2)'>'omera, flagcllum, colorafa, texana, rcdusa, pacijica, pristiphora, 

 leucogonia, meropsis, amianta, paxiana, mncneilii, svffusa, cerrosiana, panamensis, 

 rccurva, santarosae, phenax, Macoma phenax, cxteiiuata, tageliformis, kraussei, 

 sitkana, alaskana, and panamensis. T. ( Angulus) ca^-pcntcri is a new name for A. 

 variegatus, Carp., and T. (Oudardia) buttoni for A. modcstus? var. ohtusus, Carp. 



Dall,W. H. — Synopsis of the Family Ca rdiidac znd of the North American species. 

 Proc. U.S. Nat. Mus., 1900, vol. xxiii, pp. 381 — 392. 



SimPOth, H. — Uber Selbstbefruchtung bei Lungenschnecken. Verhandl. d. 

 Deutsch. Zool. Gesel!., 1900, pp. 143—147, 5 figs, in text. 



This is an interesting paper upon the morphology of certain parts of the genera- 

 tive organs of some molluscs, in which self-fertilization is known to occur. Two 

 new genera are mentioned, viz. Phrixolcstes and Hyrcanolestes, but no species. 



PilsbPy, Henry A. — Lower Califomian species of Coclocentrum and Bcrendlia. 

 Proc. Acad. Nat. Sci. Phila., 1900, pp. 550 — 555, figs, i — 4. 



The new forms are C minorinum v. gabbi, n. var., C. cisenianum, n. sp. Com- 

 paring the genus Bercndtia of Mabille with Coclocrnirum, Dr. Pilsbry concludes 

 that the former is evidently a tangent from the latter genus, " and distinguished 

 from certain Lower Californian species of that genus solely by the reduction of the 

 columella from a tube to a solid style, as in the genus Eucalodium." 



Pilsbpy, Henry A. — Sonordla, a new genus of Helices. Proc. Acad. Nat. Sci. 

 I'hila., 1900, pp. 556 — 560, pi. xxi. 



