REPORT 
ON THE 
CONTRIBUTIONS TO THE NATURAL HISTORY OF FISHES, 
DURING THE YEAR 1842. 
BY 
DK. F. H. TEOSCHEL 
MacLeay has made known a new Arrangement of Fishes, in 
the Calcutta Journal of Natural History for July, 1841, and 
in the Annals, ix. p. 197, of which the following arrangement 
of the larger groups may serve as an example : — 
I. CTENOBRANCHII ; gills pectinated. 
1. Plagiostomi, Cnv. — Cartilaginous fish with fixed branchiae ; lead- 
ing to Mammalia. 
2. Sturiones, Cuv. — Cartilaginous fish with free branchiae. 
3. OsTiNOPTERYGii, MacLcay. — Bony fish with free branchiae ; leading 
to Amphibia. 
II. ACTENOBRANCHII ; gills not pectinated. 
4. Lophobranchii, Cuv. — Bony fish with tufts, arranged in pairs 
along the branchial arches. 
5. Cyclostomi, Cuv. — Cartilaginous fish breathing by a series of 
cells. 
The author calls the first division an aberrant, and the second a 
normal group. His division, Ostinopterygii, he divides again into an 
aberrant group, Acanthopterygii (Artedi), all of which he thinks have 
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