12 “TERRA NOVA” EXPEDITION. 
Chionodraco, Loéunberg. 
Body naked, elongate ; three lateral lines without bony plates. Eye somewhat 
behind middle of head; supraorbital ridges crenulated ; a rostral spme; teeth bi- or 
tri- serial ; gill-rakers absent except for a few vestiges near the angles of the arches ; 
sub- and inter- operculum bearing a pair of spines just behind angle of praeoperculum. 
Spinous dorsal well-developed, of six or seven spines ; pelvics comparatively short, of a 
spine and five branched or bifid rays, the two outer the longest and enveloped in thick 
skin. Skeleton essentially similar to that of Champsocephalus. Vertebrae 64. 
22. Chionodraco kathleenae, Regan (Pl. vt). 
Chionodraco kathleenae, Regan, Ann. Mag. Nat. Hist. (8) x1, 1914, p. 13. 
Depth of body about 5 in the length, length of head 2? to 3. Diameter of eye 
5 to 6 in length of head, interorbital width 33 to 4. Snout a little less than 3} length 
of head. Rostral spine erect or retrorse. Maxillary extending to below anterior part 
or middle of eye. Dorsal vi-vi, 38-42, the two fins separated by an interspace. 
Anal 34-38. Pectoral } length of head or a little more, extending to above vent or 
anterior rays of anal; pelvics 2 to 3 length of head, extending to origin of anal or 
beyond. Head and body with dark spots and bars ; spinous dorsal blackish. 
Five specimens, 250 to 500 mm. in total length, from the Ross Sea, 74° 25'5., 
179° 3' E., 158 fathoms, and McMurdo Sound, 100-200 fathoms. Also an example in 
bad condition from off Granite Harbour, McMurdo Sound, 50 fathoms. 
C. hamatus, Lénnberg, known from a specimen of 330 mm., has a larger eye (43 in 
length of head, including opercular flap) and shorter pelvic fins, not reaching the vent. 
This species is named in honour of Lady Scott. 
Chaenodraco, Regan. : 
Chaenodraco, Regan, Ann. Mag. Nat. Hist. (8) xm, 1914, p. 13. 
This genus differs from Chionodraco in having the supraorbital mdges not 
crenulated, the gill-rakers developed as dentigerous prominences, and the pelvic fins 
each formed of a spine and only four rays. 
23. Chaenodraco wilsoni, Regan (Pl. rx, fig. 1). 
Chaenodraco wilsoni, Regan, Ann. Mag. Nat.. Hist. (8) xim, 1914, p. 14. 
Depth of body 6 in the length, length of head 34. Snout 22, diameter of eye 4, 
in length.of head. Maxillary extending to below anterior 4 
of eye. Rostral spine antrorse. Dorsal vit, 39, the two fins continuous at the 
base. Anal 33. Pectoral 2 length of head, extending to third or fourth ray of 
anal; pelvics 2 leneth of head, extending to seventh ray of anal; rays bifid) A 
large dark spot on the spinous dorsal. 
A single specimen, 250 mm. in total length, from McMurdo Sound, 100 to 200 
fathoms. 
This species is named in memory of Dr. E. A. Wilson. 
2 
3 
interorbital width 32 
