CHAULIODUS DENTATUS. 27 
(Si) 
the upper series, and in the lower there are sixty-four to sixty-seven, fifty- 
three to fifty-four of which are from the hyoid to the vent, or twenty- 
nine to thirty of which are from the hyoid to the ventral. A peculiar 
feature seen in the branchiostegal series of C. Sloani, not patent in that of 
C. barbatus, is the apparent change in the functional direction of the sixth 
to the thirteenth light facets from outward and downward to within the 
mouth at the side of the hyoid, and the appearance below them in the 
branchiostegal membrane of a series of very small facets as if to con- 
tinue the series as seen from the outside and from below. The narrow 
pectorals, the deeper notch in the chin and the backward position of the 
dorsal by themselves serve to distinguish C. barbatus from either C. Sloan 
or C. dentatus. 
Station Latitude. Longitude. Depth. Temperature. Bottom. 
33859 6° 29’ 20” N. 81° 52’ W. 465 fathoms 42° F. Rky. 
3375 2° 34’ N. 82° 29' W. 120s 36.6° F. Gy. glob. Oz. 
3376 BoE SUN: 82° 8’ W. W327 ss 36.3° EF. Gy. glob, Oz. 
Chauliodus dentatus sp. n. 
Br. r. 20; D. 6; A. 13; V. 7; P. 14-15; LI. 64. 
This is one of the more elongate species of the genus. It is much more 
slender than Chauliodus barbatus sp. n., has not so large a notch on the chin, 
has the dorsal nearer the head, has a broader pectoral, has a longer caudal 
region, and has larger numbers of luminous organs in the two main series. 
It has a smaller eye, a wider pectoral fin, and a longer body than C. pammelas 
Ale.; it has a longer anal fin, and a longer lateral line than C. Maccouni 
Bean; and it has a longer anal fin and a longer caudal region than 
C. Sloani Bl. Schn. 
Form slender and compressed; depth of head about one ninth, length 
of head about one eighth, and length of the caudal region somewhat less 
than one fifth of the entire length. The distance from the snout to the 
ventrals is a little less than half of that from the snout to the anal fin. 
The orbit is about two ninths, and the longest mandibular fang is nearly 
one half as long as the head. Crown convex; profils decidedly concave in 
front of the eye. The short compressed maxillary teeth are stouter and 
less numerous than those of C. barbatus; they are stouter and more erect 
than those of C. Sloani. The hinder of the luminous glands below the eye 
is not so far backward from the orbit as that on C. barbatus. On the latter 
18 
