"TERRA NOVA" EXPEDITION. 



than iiiirp>rliit,i| 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 : -;. pelvics f length of bead. 

 ( rreyish. 



Here described front two specimens, L30 and L40 mm. in total length, from nil' 

 new land south nf the Balleny Islands; depth 200 fathoms. 



These seem to belong to the same species as a small fish (55 mm.) from the Smith 

 Sandwich Islands, which is doubtless identical with Lonnberg's M. mierops from Smith 

 Georgia. M. marmoratus, Giinth., from Kerguelen, has a somewhat deeper body and 

 shorter head, larger eye. shorter barbel and dorsal filament. J/, 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 I J, as lone- ;l s the rest of the fish. 



NOTOTHENIIDAE. 



Nototheniinae. 



lit matomus, Bouleng. 



The known species of this genus number fourteen (or thirteen if T. dubius be the 

 young of T. vicariw), 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. 



[nterorbital width 3£ to 5 in length of head. D. vi-viii, 32-38. A. 32-36 . . newnesii. 



[nterorbital width 8 or 9 in length of head. I>. iv, .".7. A. 32-33 . . . nicolai. 

 1!. Cheeks and opercles scaly above, naked below. 



D. v-vi, 34-37. A. 31-33 borchgremnkii. 



D. iv-v, 30-33. A. 29-30 brachysoma. 



II. Occiput scaly; cheeks and opercles fully scaled. 



A. [nterorbital region naked, or incompletely scaled. D. iv-vi, 33 38. A. 31 35. 



Interorbital region naked, or with a single median series of scales ; diameter of eye '■'< (young) 



t" \\ (adult) in length of head ; 60 to 75 scales in a longitudinal series bernacchii. 



[nterorbital region with two or three series of scales in the middle ; diameter of eye I'.; (adult) 



in length nf head ; 56 to -V scales Ln a longitudinal series .... vicarius. 



[nterorbital region naked; dia fcer nf eye 3§ (young) in length nf head ; 55 scales in a 



longitudinal series .......... dubius. 



1'.. Interorbital region Fully scaled ; praeorbital naked. 



I 60 In 7-i scales in a. longitudinal scries. ."> I to 46 in Upper Literal line. 



I', vi-vii, 36 II. A. 33 36 hansoni. 



D. v-vn, 31-35. A. 31-35 loennbergii. 



