2 “TERRA NOVA” EXPEDITION. 
than interorbital width. Barbel + or § length of head. Maxillary extending to below 
anterior part or middle of eye. Dorsal filament (absent in one specimen) longer than 
diameter of eye, inserted a little behind base of pectoral. Anal origin only a little in 
advance of middle of length of fish. Pectoral $ to 3, pelvics 3 length of head. 
Greyish. 
Here described from two specimens, 130 and 140 mm. in total length, from off 
new land south of the Balleny Islands; depth 200 fathoms. 
These seem to belong to the same species as a small fish (55 mm.) from the South 
Sandwich Islands, which is doubtless identical with Lénnberg’s JZ mierops from South 
Georgia. J marmoratus, Giinth., from Kerguelen, has a somewhat deeper body and 
shorter head, larger eye, shorter barbel and dorsal filament. JL. orangiensis, Vaill., 
from Magellan, seems to be more slender and to have a smaller head and longer barbel 
than either of the other species, from which it differs also in the much longer tail, more 
than 13 as long as the rest of the fish. 
NoToTHENIIDAE. 
Nototheniinae. 
Trematomus, Bouleng. 
The known species of this genus number fourteen (or thirteen if 7. dubius be the 
young of 7. vicarius), from the coasts of the Antarctic Continent and South Georgia. 
In addition to three new species the “Terra Nova” obtained examples of two formerly 
placed in Notothenia, enabling me to examine the pectoral arch and to assign them to 
their correct position. 
Synopsis of the Species. 
I. Upper surface of head naked. 
A. Cheeks and opercles fully scaled. 
Interorbital width 31 to 5 in length of head. D. vi-vint, 32-38. <A. 32-36 . . newnesit. 
Interorbital width 8 or 9 in length of head. D. 1v, 37. A. 32-33 : F . nicolai. 
B. Cheeks and opercles scaly above, naked below. 
D. v—v1, 34-37. A. 31-33. ; : : ‘ ‘ F . borehgrevinkii. 
D. 1v—v, 30-33. A. 29-30 ; : : ; A : : j brachysoma. 
II. Occiput scaly ; cheeks and opercles fully scaled. 
A. Interorbital region naked, or incompletely scaled. D. 1v-v1, 33-38. A. 31-35. 
Interorbital region naked, or with a single median series of scales ; diameter of eye 3 (young) 
to 41 (adult) in length of head ; 60 to 75 scales in a longitudinal series bernacchit. 
Interorbital region with two or three series of scales in the middle ; diameter of eye 43 (adult) 
in length of head ; 56 to 59 scales in a longitudinal series . : . vicarius. 
Interorbital region naked ; diameter of eye 33 (young) in length of Tend: 55 scales in a 
longitudinal series : ‘ : ; 3 : ; : ‘ .  dubius. 
B. Interorbital region fully scaled ; praeorbital naked. 
1. 60 to 75 scales in a longitudinal series, 34 to 46 in upper lateral line. 
D. vi-vu, 36-41. A. 33-36 . . ; : : : ; ‘ . hansoni. 
D. v-vu, 31-35. A. 31-35 . : : 4 ; ¢ : : loennbergii. 
