234 PROCEEDINGS OF THE ACADEMY OF 



Having never seen any of the Greenland Gadi, I am unprepared to form 

 an opinion of their distinction from each other or from the common cod of the 

 more Southern American coast. I am, however, disposed to believe that Rein- 

 hardt has been able to fiud good characters for his G. ovale, while the cod of 

 New England, the Gulf of St. Lawrence and Hudson's Bay appears to differ 

 slightly from that of Europe by the proportions of the fins. 



The specific differences betweeu three of the species herein provisionally 

 admitted remain to be confirmed. 



Gadus morrhua Linn. 

 Gadus callarias Linn. (Young.) 

 Gadu3 callarias var. a. Fabr. 

 Morrhua vulgaris Flem. 

 Morrhua callarias Cuv. 

 Gadus morchua Reinhardt. 

 Hab. Greenland fide Reinhardt. 



Gadus ojac Richardson. 

 Gadus barbatus Fabricius (nee. Linn.) 

 Gadus ovak Reinhardt. 

 Morrhua ojac Storer. 

 Hab. Greenland. 



Gadus arenosus Mitchill. 



Gadus morrhua Mitchill, Am. Med. and Phil. Reg., vol. iv. 1814, p. 620. 

 Gadus callarias Mitchill, op. cit., pp. 620, 621, 



b. Gadus arenosus " " '' 



c. Gadus rupestris " " " 

 Morrhua aruericana Storer, Rep., p. 120. 

 Gadus americanus Gill, Cat., p. 48. 

 Gadus morrhua pt. Giinther, iv. p. 328. 



The anus is under the first rays of the second dorsal fin, and is little nearer 

 the snout than the point of the caudal peduncle. The first anal fin is quite or 

 nearly half as long again as the first dorsal, about as long as the second, and 

 about a fifth or fourth longer than the second anal. The supramaxillar ceases 

 nearly at the vertical of the front of the pupil. The posterior nostril has an 

 elevated margin. There are numerous minute pores on the head, on each 

 side, six above the supramaxillar bones, the first linear and very near the 

 margin of the snout, and four or five below and behind the eye ; six or seven 

 on each branch of the lower jaw, five along the margin of the preoperculum, 

 five in the oculo-scapular groove, including the one above the angle of the 

 branchial aperture, one between the anterior nostril and snout, one obliquely 

 above the posterior nostril, and two on the nape above the second and third of 

 the oculo-scapular groove. The caudal fin is slightly emarginated behind. 



The proportion of the fins to each other are as follows, the fractions indica- 

 ting the number of hundredths of the total length ; the proportions of the 

 same fins in Gadus morrhua, the first dorsal considered as the unit, are taken 

 from Giinther, and copied on the second line : 



The radial formula is as follows : 



D. 1315 | 1922 | 1922. A. 1922 | 1719. 



The structure of the rays, is indicated in the following formula, where the 

 first and last numbers of each fin refer to the simple articulated rays and the 

 others to the branched or bifurcated : 



D. 2. 7. 4 | 2. 12. 3 | 2. 14. 3. A. 2. 14. 3 | 2, 14. 1. 



[Sept, 



