26 EINAR LÖNNBERG, (Schwed. Südpolar-Exp. 



present specimens. In such a case it is most suitable to signify the fishes from 

 South Georgia with a third name, as through such a proceeding, as well the relation- 

 ship as the diversity are accounted for. The most apparent dissimilarity, which is 

 observed at the first look, is the different shape of the pectoral which in the fishes 

 from South Georgia is truncate, and has the same general outline as that same organ 

 of T. fiei^'iiesi, while the typical T. Iiansoni has a rounded pectoral. The interorbital 

 width of younger specimens of the subspecies is apparently somewhat narrower than 

 that of the types in which it is contained only 4' '2 to 5 times in length of head. 

 In the same way the eye of the subspecies appears to be comparatively a little 

 smaller. The number of rays of second dorsal and anal is smaller in the subspecies 

 than in the types. The differences are satisfactor}- for the distinction of a geographic 

 subspecies, but hardly more. The great distance between Victoria Land and South 

 Georgia and the thereby effected complete isolation of the two races are sufficient 

 to explain the differences, and it would almost have appeared stranger if there had 

 not existed any differences at all between the Trematonnis hansoni of the two coasts 

 mentioned above. 



The specimens from the "Southern Cross" expedition had been collected in 

 shallower water, 3 to 8 fathoms. The different physical conditions of the two coun- 

 tries ma}' explain this difference in habitat, but the average smaller size of the spe- 

 cimens from Victoria Land must also be considered. 



Before this no species of Treuiatoinus was known outside the Australian qua- 

 drant, or north of the .Antarctic polar circle. The distribution of the genus is, how- 

 ever, by the discoveries of the Swedish Antarctic Expedition widened in a verj' con- 

 siderable degree, and it is made more than probable that it is circumpolar, as three 

 different species (conf. p. 45) have been found in the American quadrant and two 

 of them so far north as at South Georgia. 



2. Trematomus bernacchii BoULENGER n. subsp. vicarius. 



I specimen caught on long-lines outside Boiler Harbour, Cumberland Bay, South 

 Georgia, in a depth of 30 m. 19th of May 1902. 



D. V, 33; A. 31; Sq. 56—59- 



Very "thick-headed with the back in front of first dorsal broad and flattened. 

 Depth of body yl^ times in total length without caudal. Length of head 3V3 times 

 in the same. Thickness of head at preopercles fully Vs (83 %) of its length. Inter- 

 orbital width 4^ '5 times in length of head. Diameter of eye 43/5 times in length of 

 head. Maxillary extending to below anterior third of eye. Lower jaw not pro- 

 jecting beyond snout. Interorbital region flat, its anterior portion onl}- scaly in the 

 middle. Opercle, occipital region and cheek seal)', snout and preorbital naked. About 



