20 “TERRA NOVA” EXPEDITION. 
In the Atlantic C. gracilis, Lowe, the body is less deep, the snout shorter, and the 
eye larger; also the maxillary is completely hidden, and the pectoral fin extends 
beyond the origin of the anal. Owing to the imperfect condition of the types of 
C. caeruleus the number of scales cannot be certainly stated, but they seem to be 
larger than in C. gracilis, which has 58 to 66 in a longitudinal series. 
Since my revision of the genus Cubiceps (Ann. Mag. Nat. Hist. (7) x, 1902, 
p- 122), when four species were recognised, Jordan and Snyder have described a 
species from Honolulu under the name Ariomma lurida. This is figured by Jordan 
and Evermann (Bull. U. 8S. Fish. Comm. xxim, 1905 p. 217, pl. xxxvm), and is 
evidently closely related to Cubiceps pauciradiatus, Giinth. and C. brevimanus, Klunz. 
BROTULIDAE. 
Pyramodon, Radcliffe. 
Pyramodon, Radclifie, Proc. U.S. Nat. Mus. xniv, 1913, p. 175. 
Cynophidium, Regan, Ann. Mag. Nat. Hist. (8) x1, 1914, p. 16. 
Head and body naked, compressed ; tail tapering ; no lateral lime. Head unarmed, 
without large muciferous channels, smooth and convex above ; eyes well-developed ; 
no barbels. Mouth large, protractile, terminal, with the lower jaw included ; teeth 
subconical, in a narrow band in praemaxillaries, uniserial and unequal in lower jaw and 
on palatines; upper jaw with a rather wide toothless interspace between a pair of 
canines, which are outside the mouth when it is closed ; lower jaw with a pair of 
strong recurved anterior canines ; vomer with a very strong curved canine followed by 
a few smaller teeth. Gill-membranes separate, free; 7 branchiostegals; 4 gills; 
pseudobranchiae very small. Vent and origins of dorsal and anal fins a short distance 
behind head ; vertical fins confluent at end of tail; no distinct caudal fin ; pectorals 
well-developed ; pelvics jugular, a pair of simple filaments. 
This genus differs from Snyderidia, Gilbert, 1905 (Bull. U.S. Fish. Comm. 1903, 
p- 654), im the presence of pelvic fins. In many respects these two genera seem to 
connect the Brotulidae with the Fierasferidae, but I have ascertained that Pyramodon 
agrees with the Brotulidae in the structure of the upper surface of the skull, the 
supraoccipital separating the rather small parietals. 
28. Pyramodon punctatus, Regan (PI. xu, fig. 3). 
Cynophidium punctatum, Regan, Ann. Mag. Nat. Hist. (8) x1, 1914, p. 16. 
Depth of body nearly equal to length of head, which is 6 in the length of the 
fish ; distance from end of snout to origin of dorsal fin 47. Snout, diameter of eye 
and interorbital width subequal, about } the length of head. Maxillary extending 
beyond eye. Three gill-rakers and several rudiments on lower part of anterior arch. 
Origin of dorsal fin shghtly in advance of vent ; pectoral * length of head ; pelvics 
1 length of head, or $ distance from their base to origin of anal. Olivaceous, powdered 
with little dark spots. 
