BATHYPTEROIS PECTORALIS. Zon 
to the body reaching a little farther backward than the hindmost. Adipose 
dorsal half way from the middle of the dorsal fin to the caudal base. Bases 
of the ventrals immediately in front of a vertical from the origin of the 
dorsal; outer two rays much produced, bound together in the greater 
portion of their length, second a little the longer. Individuals vary much 
in the length of the ventrals; on some they reach but little if any behind 
the anal, on others considerably behind the base of the caudal. Pectoral 
with three rays in the upper portion, two of them reaching beyond the 
tail, first a little the shorter, free for a short distance from the ends; third 
ray very short; lower portion of the fin with thirteen to twelve rays (in 
one case with fourteen on each side), the longest of which reach only about 
-as far backward as the posterior end of the dorsal base. Four fifths of the 
specimens have thirteen rays in the lower portion of each pectoral. On all 
of the specimens of greater Jength than four and one half inches the ventrals 
reach backward of the anal; on several three and one half inch individuals 
the ventrals do not reach to the end of the anal. In a female of six inches 
the eggs are about ready for extrusion; in this case the ventrals reach a 
little more than half way across the space between the anal and the base 
of the caudal and the ends of the outer pair of rays are thickened and 
fleshy as if in special function with the egg laying. The ventrals of a 
male of six and one half inches in length reach almost to the caudal notch. 
Caudal wide, deeply forked, lower lobe longer, with a notch below the bases 
of the lower rays. The difference between the upper and the lower lobes 
of the tail is hardly perceptible on small specimens, but increases with age. 
Blackish, lighter on the fins, the margins of the scales, and the lateral 
line. 
Station. Latitude. Longitude. Depth. Temperature. Bottom. 
3418 16°°33/ Ne 99° 52’ 30” W. _ 660 fathoms 39° F. Br. 8. bk. Sp. 
3425 QTSSIO! IN. 106° 24’ W. 680 *¢ 39° F. Gn. M. and 8. 
Bathypterois pectoralis sp. n. 
Plate K, fig. 1. 
Br.r. 13; D. 13-14; A.9; (rarely 10); V.9; P. 3+ 11 (rarely 10); LI. 
59-62; Ltr. 6 + 9-10. 
In form and proportions this species approaches Bathypterois quadrijilis of 
Giinther. It is closely allied to B. ventralis described above, but has one or 
two more rays in the dorsal and one or two fewer in the pectoral, and the 
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