"Tlie surface of the stomach was studded with large chalky- 

 looking spots. Intestines white, corrugated, and three 

 inches in length. An oblong red spleen lies between the 

 pyloric branch and body of the stomach. The urinary 

 bladder close to the anus, spha;rical, and in all the speci- 

 mens, full of water. There were but few females among 

 the specimens, and in these the ova were very large and 

 white." The subjoined vignette represents the liver and 

 stomach, in nitu fa) ; the stomach and intestine (b), and 

 the urinary bladder and lower part of the rectum (ej. 



Dimensions of five of the most complete specimens. 



Females. Male. 



Length, exclusire of caudal... 6-73 6.35 6 27 600 2-.5.T inches. 



from vent to cauilal... 5-72 :V42 .307 .360 1-28 „ 



Greatest depth of hody 1-82 163 1-20 1-.50 048 „ 



breadth of ditto 112 0-98 0-93 103 026 „ 



Length of head to gill-opening 2-00 1-82 182 1'83 059 „ 



Heightofhead 1-21 1-17 1-28 115 045 „ 



Breadth of ditto O'So 0-80 0-91 102 0-25 „ 



Length of pectoral fin 1-60 125 126 1-28 027 „ 



ventrals I'll 107 104 „ 



Average weight, 2j ounces. 



Hab. Antarctic Glacial Ocean, off Victoria Land. 



ventral fins, and a first dorsal similar to that of cyano- 

 b ranch a. 



IIab. Among the sublittoral sea-weed of Terra del 

 Fuego. 



NOTOTHENIA ? RO.SSII. 



Ch. Spec. N. ? radiis pinnie dc 

 iusis, brevibus ; corpore elongat 



Kadii:— Br. 6; D. 7| 



NOTOTHENIA MAGELLANICA. Forster. 



Ch. Spec. N. capite supra piano, dedive, laieribus et 

 infra roitindato, sqiiamoso ; preoperciilis, operculisque 

 sqvamosis ; pinnis ventral ibiis aciinunalis, pinna dorsi 

 secundd el anisensim postice diminuendis ; pinna dorsi 

 priori trigond ; pinnis omnibus fuscis. (Forster.) 



Radii 



14; P. 17: 



115. 



-Br. 6; D. 51—31; C. 

 (Forster.) 



Gadus magellanicus, I. R. Forsteri, M.S. TV. 46. aj^ud 

 Bl. Schn. p. 11. Icon. ined. Bibl. Banks, fig. 178. 

 Of this species we have seen no example. The figure 

 above referred to represents a fish very similar to the fol- 

 lowing in general form, but with a different outline to the 



Richardson. 



irst prioris r/gidis, ob- 



1|32; A. l|-26; C. 11|; P. 22 ; 

 V. 11.5. 



Plate v., figs. 1, 2, one-fourth of the natural size. 



This fish is not only of a much larger size than the 

 specimens of the preceding species of Notothenia which 

 were brought home, but differs from them all in its com- 

 paratively low first dorsal, supported by bluntish spines, 

 destitute of flexibility, or of filamentous tips. There is, 

 moreover, a very short spine at the commencement of the 

 dorsal and anal, and the pectoral fin is smaller, and less 

 orbicular than in the other NotothenicB. In other respects 

 there appears to be no external generic difference. Only 

 one specimen exists in the collection, and that is merely 

 the stuffed skin, so that we can add no anatomical parti- 

 culars to the following description, which, from the aber- 

 rant character of the species, is given in detail. 



The head measures more than a fourth part of the whole 

 length of the fish, caudal fin excluded. Its height at the 

 preoperculum is about one-seventh less than its thickness, 

 which is equal to two-thirds of its length. The top of the 

 head is flattish, the descent from the hind head to the 

 snout is very slight, and the inclination is equally slig:ht 

 along the back to the tail. The belly is a little tumid, but its 

 profile behind the anus has the same inclination with that of 

 the back, in an opposite way. The head is thicker than 

 the body. The oval and lateral orbit is rather large, and 

 is placed high up in the cheek, at the distance of more 

 than its length from the edge of the upper lip, and three 

 and a half times as far from the gill-opening. In the 

 dried specimen the suborbitar bones show unevenly through 

 the skin, but when the fish was recent, they must have 

 been entirely concealed. The anterior one covers merely 

 the head of the intermaxillary, its edge not being free 

 beneath. One nostril is placed on a level with the upper 

 edge of the orbit, and midway between the eye and anterior 

 comer of the preorbitar, or edge of the snout. This has a 

 tubular rim. The other very minute opening is close to 

 thatcorner. The preoperculum has its limbs sliglitly curved, 

 and meeting at a right angle, but with the corner gra- 

 dually rounded off. Its edge is quite smooth, audits very 

 narrow disk is perforated with pores, as in the other spe- 

 cies, but their number cannot be ascertained from the 

 specimens, as both cheeks have been opened along the 

 edge of the preoperculum, in its preparation. The upper 

 end of this bone is about midway between the eye and the 

 gill-opening. The slightly uneven interoperculum is five 

 times as long as it is broad. The suboperculum is ante- 

 riorly of the same height with the interoperculum, and 

 gradually tapers away posteriorly to a thin point, which 



