PHILIPPINE MACROUROID FISHES—GILBERT AND HUBBS. 527 
46. HYMENOCEPHALUS LONGIPES Smith and Radcliffe. 
Hymenocephalus longipes SMirH and RaApcuLirFE, Proc. U. 8S. Nat. Mus., 
vol. 438, 1912, p. 109, pl. 23, fig. 1. 
= List of stations. 
Albatross | pas Depthin 
‘station. | Locality. fathoms. 
Bottom | Number 
tempera-| of speci- 
ture. mens. 
BLS Ort southwestern Wuzoni ssc .-6 tears eee cee aces : 
5216 | Between Burias and Luzon...-- 
5222 | Between Marinduque and Luzon 
5372 | Vicinity of Marinduque Island 
EYES) lpaeee GO sseae nok sccisd es seeeee te 5 
5387 | Between Burias and Luzon 
5403 | 
5412 | Between Cebu and Bohol 
Ly: 3 Va eee GOs sctsad carter seu 
BAIA eee dare Hae aorta aac 
5421 | Between Panay and Guimaras 
5502 | Off northern Mindanao......- a 
SO ee Oli aE ee ae ea BORE ae es tree eran a oe 
Le] 
I 
hs} 
bh OD ONS et et Tt Oe 
to 
When the tail is entire, the head is contained six times in the total 
length; the greatest width of the head is contained twice in its 
length ; the middle of the length of the head is not at the posterior mar- 
gin of pupil, being nearer to the posterior rim of the orbit, varying 
from midway between pupil and hind margin of orbit to the hind 
margin of the orbit. Preocular length of snout, contained 4.2 (4.0 to 
4.8 in paratypes) times in length of head to end of membrane at 
angle of opercle; orbit, 3.35 (2.8 to 34) ; interorbital, 5.7 (4.8 to 6.4) ; 
length of upper jaw, 1.8 (1.75 to 2.0). Branchiostegals, 7. 
The posterior lens-shaped body 1s about half as wide as the pupil; 
its posterior margin is emarginate, as in longiceps; the anterior 
organ is similar but shghtly smaller, and is located, as in all other 
species, on the mid-ventral line between the ventrals and the isthmus. 
The region between the pectoral and ventral fins and the anus is not 
naked, as originally described, but 1s covered with thin, spineless 
scales. . 
The striation of the belly is extensive, as in HZ. striatissimus, ita- 
licus, cavernosus, and longiceps. ‘The base of each ventral fin is sur- 
rounded by this striated area, which extends thence backward nearly 
to the anus, leaving a median non-striated strip; the region before 
and below the pectoral bases, the entire sides of the isthmus, and the 
gular membrane are all striated; the black cross lines on the gular 
membranes are not strongly developed. 
(Jongipes, in reference to the produced ventral fin.) 
47. HYMENOCEPHALUS STRIATISSIMUS Jordan and Gilbert. 
This species was dredged in large series by the Albatross about the 
Philippine Islands. The large number (472) of specimens available 
has made possible a detailed study of the material, which has led us 
119404—20——_11 
