390 Miscellanies. 



Niphon. Cuv. Lower jaw considerably longest. Cynichthys. Sw. 



T . r^ 's Tail ffi'eatly forked ; eyes very ) ^T • i a 



Luctoperca. Cuv. ji^p ( VarioLa. Sw. 



The tables alone, prove that Mr. S. has studied ichthyology deep- 

 ly, and the work should, therefore, be carefully studied by those who 

 are interested in this branch of zoology. We object to Perca and 

 Labrax being united, (as they are in the last table,) and think Lucto- 

 perca and Perca cannot be placed in the same genus. The analogies, 

 however, would remain the same, were all the sub-genera elevated to 

 genera. S. S. H. 



16. Natural History of the fresh water fish of Central Europe ; 

 by Louis Agassiz : plates, folio, 1839, Neuchatel.* 



The first livraison of this long promised work has at length reach- 

 ed us from its accomplished author. The beauty of the Poissons 

 Fossiles led us to high expectations of this performance, and we are 

 most happy to find that they were not vain. 



The genera Salmo and Thymallus form the subject of this first di- 

 vision, to the illustration of which twenty-seven plates are devoted, 

 giving each species from three to five plates. Thus Salmo Fario is 

 represented in five different plates, showing the difference of age, 

 sex, and locality, and presenting the fish as seen from above, on the 

 side, and in a transverse section, taken before the ventral or dorsal 

 fins ; also the structure of the scales much magnified, and the posi- 

 tion and anatomy of the fins. The descriptions are in French, Ger- 

 man, and English, which arrangement must be of great service to the 

 work, as well as to ichthyologists of different nations, who might not 

 all be equally satisfied, if one language alone was used. The present 

 livraison contains only the first division of the genera named above, 

 and is to be soon followed by another, which will complete this monog- 

 raphy ; and then each succeeding livraison is to finish, as far as prac- 

 ticable, the monography of the genus of which it treats. 



The first volume of text, which includes the natural history and 

 anatomy of the Salmonidae, will appear with the second livraison of 

 plates, which will include the species of the genus Coregon, and the 

 anatomical details relative to this family. 



The following is a list of the species figured in the present livrai- 

 son : 1. Salmo salar, L., four plates, three of them colored. 2. S. 

 Fario, L,, five plates, four colored. 3. S. Trutta, L., four plates, 

 three colored. 4. S. Umbla, L., four plates, three colored. 5. S. 

 Hucho, L., three plates, two colored. 6. S. lacustris, L., three 



*Histoire Naturelle des Poissons d'Eau douce de Europe Centrale, par L. Agas- 

 siz 5 planches. Neuchatel (Suisse) aux frais de I'Auteur, 1839. 



