GADOIDS. LY 
The descriptions of Z. niger and of L. fragilis, the other known species of 
the genus, do not inform us of the possession of either glandular spindles or 
the annular gland on the head. It is not at all likely, however, that these 
species differ from Z. idustris in regard to the particular features of the head 
while agreeing so closely with it in other respects. The original description 
of the lateral line of L. niger, Ann. Mag. N. H., (6) VIII., 34, is as follows: 
“The scales of the very conspicuous lateral line are adherent and greatly 
enlarged ; they lie beneath a continuous sheath of black skin, which is loop- 
holed over a long narrow groove with raised margins situated along the 
vertical diameter of each scale. These grooves are filled with an opaque 
white substance, which probably has a luminous function. The lateral line, 
in fact, is exactly similar to that of several species of Halosaurus.”’ On 
5) 
the species secured by the “ Albatross” the black skin is continuous and 
- covered by small scales, there are apparently no loopholes over the glands, 
and no grooves along the vertical diameter of each scale, and in various 
ways the structure of the line differs considerably from that of the Halo- 
sauri, as is shown in the description and in the figures on Plate XXXIV. 
The skull presents no very great differences when compared with that of 
other Brotuloids, Plate XXXIV. fig. 2. Its bones are thin and fragile, and 
are much excavated for the channels of the lateral system. The lower jaw 
is short and very deep posteriorly, the depth being more than half of the 
length. Preorbitals and suborbitals bear considerable expansions. The 
operculum is much reduced in size. The occipital crest is prominent at 
the nape and is continued downward on the back of the skull in a compara- 
tively wide compressed ridge in front of the spine on the anterior vertebra. 
In the bases of the pectorals the elongation of the carpals is not to be com- 
pared with what is seen m Sciadonus. 
This species was obtained by the “ Albatross” at two localities, both of 
them within the Gulf of Panama. 
Station. Latitude. Longitude. Depth. Temperature, Bottom. 
3358 6° 30’ N. 81° 44’ W. 555 fathoms 40.2° F. Gn. S. 
3394 TOPE INT 79° 35! W. Sy 41.8° F. Dk. gn. M. 
GADOIDS. 
The specimens upon which this report is made establish the presence of 
the Gadoids at considerable depths in the equatorial regions of the eastern 
Pacific. They represent more than one third of the genera positively 
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