232 Recent Literature. [March, 



spread. All the species, originating in the head-waters, propa- 

 gated down-stream, and thus arose the overlapping of faunas, and 

 probably the disappearance of many faunae as peculiar as is that 

 of the Alabama, which contains, besides some distinctive Unios 

 and a singular Goniobasis, two Strcpomatid genera, Schizostoma 

 and Tulotoma, with thirty species, none of which were found 

 elsewhere. 



Zittel's Handbuch der Pal/EONtologie. 1 — This standard 

 and fresh work on general palaeontology is slowly appearing in 

 numbers, the present one beginning the treatment of the Mollusca. 

 One important feature of the present number are the two hun- 

 dred excellent wood-cuts of fossil Lamellibranchs. The orders, 

 families and leading genera are briefly described and the typical 

 species mentioned. The systematic portion is succeeded by a 

 brief section on the distribution of Lamellibranchs in geological 

 time. It appears that of all fossil mollusks the Lamellibranchs con- 

 stituted a fourth part in the palaeozoic period, in the Jura and 

 chalk periods one-half, and in the Tertiary period a third part. 



Martin and Moale's How to Dissect a Chelonian 9 . — This 

 little book is the first of a series designed to form a handbook of 

 vertebrate dissections. The directions given are meant for use 

 in connection with lectures, and the reading of a good text-book 

 and some knowledge of human osteology on the part of the dis- 

 sector is assumed by the author. The species dissected is the 

 red-bellied, slider terrapin ( ' Pseudcmys rugosa). After stating 

 the zoological position of this terrapin in general terms, taken, 

 with slight modifications, from Huxley, the student is then led to 

 examine briefly the general external appearance of the animal, 

 and then clear, succinct, and, we should think, sufficiently full 

 directions how to dissect the creature are given. The method 

 pursued is not comparative, but special ; we should look for the 

 introduction of the comparative method in the succeeding parts. 

 No illustrations of the soft parts are given. A frontispiece is 

 devoted to good figures, showing the different parts of the skull. 

 The book is useful, and one which is needed. 



Packard's Zoology, Third Edition 3 . — The changes made in 

 this edition consist mainly in the correction of errors, the results 

 of suggestions and criticisms from naturalists and teachers. Among 

 the changes and additions are references to Ryder's Symphyla, 



Leip/i-. I 

 II. N i:\vi 



' for High Schools i 

 New York, Henry I 



