136 Bibliographical Notices. 



is very poor in Crustacea, of which the author notices two new 

 species, Gammarus caspius and Stenosoma pusillum. It is also ex- 

 ceedingly poor in Mollusca compared with the Black Sea, which is 

 ascribed to the following cause ; — that the sea is continually dissolving 

 and taking up great quantities of salt, numerous beds of which occur 

 in the neighbourhood, at Baku, Sallian, and towards the east coast, 

 and in the hot summer the constant evaporation concentrates the 

 salt water to such a degree as to render it unfit for the preservation 

 of animal life. 



2. On the dentition of the whale, by Prof. Wiegmann. 



3. Remarks on the skulls of Lutra and Spalax, by H. Nathusius. 



4. Cheloniorum Tabula Analytica, auctore Carolo L. Bonaparte. 



5. A highly interesting paper on Evadne Normanni, a hitherto un- 

 known Entomostracon, by M. Loven. The Evadne forms a new genus > 

 and the author has named the only species with which he is ac- 

 quainted after the distinguished naturalist Alex. v. Nordmann, Pro- 

 fessor at Odessa, The author has given a detailed anatomy of the 

 various organs, comparing them with those of Limnadia, Daphnia, 

 Lynceus and Polyphemus. It is a very lively animal and its motions 

 are more regular than those of Daphnia. It never proceeds in a 

 straight, but generally in a zigzag direction. The scanty knowledge 

 of the exotic forms, and the dissimilarity of some of the known ge- 

 nera, for instance Daphnia and Cyclops, Cypris and Apus, which un- 

 doubtedly will have to be widely separated when we have become 

 acquainted with more forms, renders the systematizing at present 

 very difficult. Evadne may be considered as a link, and is most 

 closely allied to Polyphemus, Mull. ; it may be easily distinguished 

 by its enormous thorax. 



6. On Limosa Meyeri, Leisl., and L. rubra, Briss., by Drs. Horn- 

 schuch and Schilling. The specific difference of these two birds has 

 long been doubtful ; to settle this point the authors examined and 

 compared a vast number of individuals, and have established the fol- 

 lowing specific distinctions : — 



Limosa Meyeri, Leisl. Crown of the head flat ; forehead extended, 

 from the posterior angle of the nasal aperture to the anterior edge 

 of the eye, in the male 10 lines, in the female 11 to 12 lines ; lorum 

 blackish brown, distinct; the tail white, banded with blackish 

 brown. 



Limosa rufa, Briss. Crown of the head prominent ; forehead short, 

 from the posterior angle of the nasal aperture to the anterior edge 

 of the eyes 8 lines, in the female ? lorum blackish brown only inti- 

 mated ; tail white, and banded with blackish brown. 



Summer clothing of the old male. — L. Meyeri, Leisl. The entire 



