110 REPORT ON ZOOLOGY, MDCCCXL1II. 



I). 9 ; A. 9. Maldouado. L. multidentata (id.) Teeth tricuspid, but in 

 several rows ; 3 inch. D. 9 ; A. 9. Monte Video. Will probably be found 

 to constitute a distinct genus. L. mento, Heckel, " Fische Syriens," with 

 projecting cliin. D. 2. 10 ; A. 2. 9. L. cypris (id.) Dorsal fm wider ante- 

 riorly. D. 2. 9 ; A. 2. 8. Both from Mossoul. 



Fundtdiis zebra, De Kay. About twenty perpendicular lines on the body, 

 dorsal and anal fins punctated with white. D. 10 ; P. 17 ; V. 6 ; A. 10. In 

 salt-water creeks near New York. 



Hydraryira africn/nJa, De Kay. Olive-brown, with a black broad stripe on 

 the tail ; four branchiostegous rays ; 3- inch. D. 15 ; P. 15 ; V. 6 ; A. 10. 

 Lake Champlaiu. 



Among the Cypriiiodontes Jeuyus places a new genus, Mesites, which docs 

 not appear to differ from Galaxias, Cuv. The author describes three new 

 species, M. maculatus and ulpiitus, from Tierra del Fuego, and J/". attenuatus, 

 from New Zealand. 2 2 inch, is stated to be the size of all three. 



CHARACIN^E. The species of Tetraffonoptents, instituted by Jenyus (Voy- 

 age of Beagle), have already been considered in the work on the Characiuse. 

 (vid. sup. vol. I, p. 81). T. rutttus does not appear to differ from 

 bimac., Mull., Tr. (Hulmo blunn-nlui n.s, Bl.), T. Abramis and 

 are new : f'tti(t//(s appears to be the female of scabripii/iiis. T. 

 on account of the different dentition, must constitute a new genus. All from 

 South America. 



SALMONID^:. Histoire Naturelle des Poissons d'Eau 

 douce de TEurope Centrale, par L. Agassiz. 



Embryologie des Salmones, par C. Vogel. Neufchatel, 

 1842, 8vo. The observations were made on Coregonus 

 palea, Cuv. 



Young lias made observations on the growth of the 

 Salmon. As long as the Fish remain in fresh water, 

 Young agrees entirely with Shaw ; in salt water they grow 

 much faster. He marked many individuals on their passage 

 to the sea, and numbers of these were taken on their return, 

 so that there could be no doubt of their being the same 

 Fish. He thus observed the change at different ages. In. 

 April and May, 1837, he marked the descending " Sniolts," 

 which in June and July were retaken as " Grilse ;" they 

 weighed more or less according to the length of time they 

 had been in the sea. One marked in April weighed on the 

 25th July seven pounds, another marked in May weighed 



