NATURAL SCIENCES OP PHILADELPHIA. 235 



The rays of the specimens, whose measurements are given, are herewith 

 indicated. 



N.Foundland D. 13 22 22 A. 22 20 



Labrador 13 18 19 19 19 



Hudson's Bay 13 17 19 19 17 



The more detailed measurements of these specimens are given in the follow- 

 ing table, and are taken from specimens of equal size, scarcely more than a 

 foot long. The first one was obtained by the author at Newfoundland ; the 

 second at Labrador, by Dr. Elliott Coues, and exhibits the monstrosity of two 

 barbels, one behind the other ; the third was obtained at Hudson's Bay by 

 Mr. Drexler, and has unusually long pectoral and ventral fins. Notwithstand- 

 ing these deviations of the last two, on account of which they were selected, 

 they nearly agree in most of the measurements. 



Extreme length (=100) 12 12} 12} 



Body Greatest height.. , 18 18 15? 



Height of tail behind second dorsal fin 12 10 9 



Least height of tail 5 4V 4 



Length of tail ? 12 11 



Head Greatest length 26 26} 26 



Greatest width 12 ll| 11} 



Width of interocular area 6} 6 6} 



Height at nape 15 15 14 



Length of snout 8} 9} 9 



Length of operculum 5 5 5} 



Length of supramaxillar 9} 10.} 11| 



Orbit Diameter 5} 5} 5} 



Dorsal (First) Distance from snout 29 30 31 



Length of base 1L} 11 12 



Greatest height. .. 12 13} 14} 



(Second) Length of base 18 16} 16 



Greatest height 10 10 1L} 



(Third) Length of base 14 13 13 



Greatest height 9 10 10} 



Anal (First) Distance from snout 45} 47}- 47 



Length of base 18 15} 17} 



Height at longest ray 11} 12} 11 



Caudal Length of middle rays 7 7 8 



" " external rays 11 11 12 



Pectoral Length 13 13} 16} 



Ventral Length 12 12 15} 



Gadus tomcodus Walbaum. 



Gadus tom-cod Wallbaum, Artedi, p. 133, 1792. 



Gadus pruinosus Mitchill, Rep. 



Gadus tomcodus Mitchill, Am. Med. and Phil. Reg., iv. 1814, pp. 621, 622. 



(6.) G. t. fuscus " " " " 



(c.) G. t. luteus " " " " 



(d.)G.t. luteo-pallidus " " " " 



(e.) G. t. mixtus " " " " 



Gadus pruinosus " " " " 



Gadus polymorphus " " " " 



Morrhua (tomcodus) Cuv., R. A. 



Morrhua tomcodus Storer, Rep. 



Morrhua prninosa Dekay. 



The anus is under the last rays of the first dorsal fin and is nearly midway 

 between the snout and the axil of the anal fin. The first anal is about twice 

 as long as the first dorsal, about a third longer than the second, and nearly or 



1863.] 



