132 “TERRA NOVA” EXPEDITION. 
Artedidraco (Pl. II, fig. 1). 
Examples of A. loennbergii, Roule, and A. skottsbergii, Linnberg, taken by the 
“Terra Nova” in McMurdo Sound, at a depth of 207 fathoms, on January 23rd, 1912, 
include nearly ripe females with eggs 23 to 3 mm. in diameter. Lonnberg has recorded 
nearly ripe females of A. mirus, with eggs of 25 mm., from South Georgia in May. 
On January 28th, 1904, the ‘* Discovery ” obtained two larvae which I identify as 
A. skottsbergii, at Hut Point, Ross Island, at a depth of 3 fathoms. These are 13 mm. 
long, and judging by the development of the vertical fins and the size of the yolk-sac 
they have not been hatched very long; one of them is figured (PL. I, fig. 1). The 
short tail and large yolk-sac make this larva quite unlike that of Plewragramma in 
appearance. 
GYMNODRACONIDAE. 
Gymnodraco acuticeps, Bouleng. (Pl. II, fig. 4). 
A post-larval fish 24 mm. long was taken by the “ Discovery” on Jan. 28th, 
1904, at Ross Island, at a depth of 3 fathoms. The caudal and pectoral fins are fully 
developed, the pelvies are rudimentary, and the dorsal and anal rays are all present 
but do not reach the edge of the fin. A large yolk-sac is still evident. The snout 1s 
short and blunt as compared with that of the adult fish, and the oval nostril is 
relatively large; the opercular spine is not yet developed. 
CHAENICHTHYIDAE. 
The type of Chaenichthys rugosus, Regan, from Kerguelen, taken between October 
and February, is a ripe female with eggs 3 to 4 mm. in diameter. Lonnberg has 
examined a ripe female of Champsocephalus guinari, taken in May at South Georgia ; 
this had eggs 4 mm. in diameter. 
Pagetopsis macropterus, Bouleng. (Pl. Ill, figs. 1-3). 
Two larvae from the “Terra Nova” collection, taken at Cape Evans, McMurdo 
Sound, may be referred to this species. The smaller, 14 mm. long, was captured on 
May 13th; the larger, 15 mm. long, on June 28th, 1911, at a depth of 20 metres. 
Two somewhat larger specimens, 19 and 20 mm. long, were obtained by the 
“Discovery ” at Ross Island. 
The wide mouth, cleft to below or beyond the posterior edge of the eye, at once 
distinguishes these larvae from those of the Nototheniidae and Bathydraconidae ; 
another distinctive feature is the precocious development of the pelvic fins. The 
relatively short tail, the small number of myotomes, and the black colour of the pelvic 
fin membrane are characteristic of this species. 
The series illustrates well the growth of the produced snout of the adult fish from 
the snub-nosed form of the larva. 
