444 BULLETIN 100, UNITED STATES NATIONAL MUSEUM. 



One of the specimens from station 5518 contained in its stomach 

 one of the horny jaws (1 cm. long) of some cephalopod. 



The lateral line courses along a low curve anteriorly. The large 

 scales are in but four series between the lateral line and the origin of 

 the second dorsal fin ; they are covered with small suberect spinules, 

 arranged in quincunx over most of the body, but aligned, more or 

 less definitely, into strongly divergent series anteriorly, especially 

 on the head. The scale characters of the species agree with those 

 of quincunciatus in contrast with those of argentatus ; the median 

 occipital scute is preceded by a similar scale on 'each side; a narrow 

 scaleless groove extends backward along the upper surface of the 

 snout just outside the series of scales bounding the median rostral 

 series. The under surface of the head is completely scaled, with the 

 exception of the gular and branchiostegal membranes, and of the 

 rami of the mandibles, which have only a few scales posteriorly 

 (the rami are completely scaled in C. quincunciatus). 



Fin measurements of specimens from southern Luzon — length of 

 first dorsal base 1.2 (1.0 to 1.35) in the interval between the dorsal 

 fins, 1.8 (1.65 to 1.9) in 'the length of the head behind the orbit; 

 length of pectoral fin, 3.05 and 3.3 in the head (two specimens) ; 

 outer ventral rays, 4.3 (one specimen) ; second ventral ray, 5.1 (one). 



Fin measurements of specimens from station 5518 — first dorsal 

 base, 0.9 and 1.2 interdorsal, 1.65 and 2.0 in postorbital ; outer ventral 

 ray, 3.6 (one specimen) ; second ventral ray, 4.65 (one). 



The origin of the anal fin is slightly before (or directly below) 

 that of the second dorsal. 



The dark markings of the young become indistinct in the adult. 

 In the specimen 150 mm. long there are several dark dorsal saddles 

 anteriorly — one just before the first dorsal fin, another below that 

 fin, a third below the posterior part of the interdorsal space and the 

 anterior end of the second xlorsal fin, and two posterior to these ; of 

 these saddles the penultimate and the one under the first dorsal ex- 

 tend a short distance below the lateral line. Posteriorly the tail is 

 crossed by dark vertical bars about as wide as the interspaces between 

 them. The occipital region is dusky. The silvery area covers the 

 sides of the head, the trunk below the lateral line, and the median 

 third of the sides of the tail. The belly is dusky between the ventral 

 fins and the isthmus and about the anus, from which region a black 

 streak extends forward to an anterior elliptical dilation covering the 

 gland-like organ in the body wall. The axil of the pectoral is black. 

 The snout is dark along its margins and mid-dorsal line, and dusky 

 below. The concealed region about the tip of the premaxillaries is 

 dark; the inner wall of the sensory cavity just above the ventral 



