24G DEEP SEA FISHES. 



The twelve (in cases eleven) branchiostegal light facets occupy the intervals 

 between the rays. 



Black, lighter on fins and snout, silvery on cheeks, eyes, and flanks. 

 The silvery area of the head passes through the eye across the cheek to the 

 suboperculnm. Below the scales the skin appears more or less of silver 

 color. Linings of mouth, gill chamber, and belly black. 



Cyclothone signata sp. n. 



Plate J", fig. 3. 



Br. r. 1.3; D. 12; A. 21; V. 7; P. 10. 



Apparently this species is less slender than Cycloihone acclinidens. The 

 positions of the fins, and the formula;, do not vary greatly from those of 

 that species, but the coloration is very different; it is in this that tlie 

 greatest distinction occurs. The colors of each of these species were taken 

 from fresh specimens, and the figures, Plate J, figs. 3 and 4, show them 

 as they existed at the time. In the present tjpes the ground color was 

 white ; on this the eyes and light organs appeared black with silver facings, 

 the belly was blackish, from the black abdominal linings, tinted with bluish, 

 and near the edges with reddish, and there were blackish markings in 

 various parts of the surface: a pair of elongate spots on the forehead, 

 diverging from the nape toward the eyes, a series of transverse streaks on 

 the flank, as if to outline the vertebrae, a broken line along the flank, a 

 series of spots along the bases of the rays on dorsal and anal, a group of 

 several spots behind the angle of the mouth, a group behind the abdominal 

 cavity on the flank, several spots on the base of the tail, and a transverse 

 streak across the bases of the caudal rays. 



The light facets are comparatively large ; below the eye one is present ; 

 there are eleven in the branchiostegal series, four or five on the isthmus, 

 fifteen or sixteen between the isthmus and the anal, and fourteen or fifteen 

 from the anal to the caudal. 



On these specimens the teeth may be pressed forward against the jaw 

 to spring out again on removal of the pressure, but whether the animal can 

 place its teeth close along the jaws and extend them out at will in life is 



