558 PROCEEDINGS OF THE ACADEMY OF [DeC, 



ently of hexagonal shape, thin and smooth, disposed in even longitu- 

 dinal series, of nearly uniform size and but little crowded on caudal 

 peduncle. Head, caudal and fins naked. Long hyoid flattened 

 filament equal to about 1| times head in length, slightly expanded 

 at end within which a photophore, and terminated by 3 short thin 

 filaments, longest of which not quite equal to eye. Two smaller 

 photophores at lower basal surface and another about first fourth 

 in length of hyoid filament. Two? (at least one) rather large 

 photophores, their diameter less than 4 in eye, just below and close 

 to latter. Behind eye and just above maxillary concurrently on 

 cheek, 2 rows of quite small photophores, these continued up con- 

 currently with preopercle edge to supra-postocular region. Within 

 lower triangle of cheek also numerous small photophores, like those 

 just described, though becoming sparse toward eye. Along outer 

 mandibular edge series of small photophores where anteriorly they 

 are interrupted by fangs. Within branchiostegal membrane between 

 bases of each branchiostegal ray, a large photophore, though none 

 so large as infraorbital. Three similar photophores at lower posterior 

 articulation of opercle. About 10 pairs of similar large photophores 

 along isthmus. Along ventral edge of entire trunk length 2 rows 

 of large photophores, apparently 1 in centre of each scale, and extend- 

 ing back to caudal base, though only a single series after ventrals 

 and along lower caudal peduncle surface. Each scale (according 

 to pocket) with at least 1 small photophore medianly on dorsal 

 region, though below vertebral axis anteriorly on costal region each 

 scale with a median cluster of at least 4 minute photophores. Pos- 

 teriorly on body laterally, as above ventral base cluster reduced 

 to 3 photophores and in region above anal only 2 photophores. 

 Along side of caudal peduncle almost all photophores single. Over 

 abdominal scales very numerous small photophores, mostly arranged 

 as marginal series, or at least as reticulations, around larger 

 photophores. 



Dorsal origin a trifle before last seventh in space between caudal 

 base and mandible tip, base apparently little shorter than that of 

 anal (fin damaged). Anal inserted apparently before dorsal origin, 

 rays graduated up to fourth, after which all a little shorter (damaged). 

 Caudal distinctly forked nearly a third its length, and lobes appar- 

 ently pointed sharply. Pectoral short (damaged), inserted low. 

 Ventral inserted about last third in space between pectoral origin 

 and caudal base, fin short (damaged). Vent apparently close 

 before anal. 



