486 Analytical Notices of Books. 



in the same state as the yVog, and measuring two inches and seven or 

 eio-ht lines in length. Its skeleton is compared with that of the common 

 Salamander, from which it differs in various particulars. " The greater 

 breadth of its head distinguishes it from the Water Salamanders; and 

 from all the known species of Land Salamanders it differs in the structure 

 of its skull, and in the very backward position of its orbits, by which 

 it approaches the/rogfs on one side and the Proteus on the other." 

 Along with this Salamander occurs the Triton Xoachicus, Goldf., a small 

 species referred to that genus on account of its narrow oval skull, and 

 measuring somewhat more than two inches in total length. It differs 

 from the living species of its genus in the structure of its skull, the 

 pecuharities of which are described and figured. 



Lastly the author figures an impression representing two fragments of 

 a spirally rolled snake-like body, to which he gives the name of Ophis 

 duhius, doubting whether they belong to a snake or a serpentiform fish. 

 It is a curious specimen and well deserves the attention of fossil zoologists. 



The " Beitrage zur Petrefactenkunde" of Dr. Von Meyer is also a 

 miscellaneous paper on fossil remains of considerable extent and high 

 importance. It is divided into four sections, the first of which contains 

 *' a description of the Orthocsratites slriolatus, with remarks on the 

 structure and occurrence of certain polythalamous fos.il Cephalopoda; 

 and a description of CaJymene cequalis." This part of the memoir 

 commences with a detailed examination of the structure of Oi thoceratites 

 and of the other fossil Cephalopods, and especially the Belemnites, to 

 which they are related. In the course of his examination several new 

 facts are brought to light; and additional means of regulating the 

 arrangement of the shells, and of determining the st;tion and characters 

 of the animals by which they were formed, are furnished to the zoologist. 

 The new species described is from the crauwacke schist of Herborn ; its 

 characters are given with great minuteness, and figured in two plates 

 with much detail. A general essay on the strata in which Orthoceratites 

 have hitherto been found, and on the species peculiar to each, together 

 with some notices of other fossil shells occurring in the same localities, 

 forms the subject of the succeeding chapter, and is continued in an 



