DISCUSSION OF SPECIES AND THEIR DISTEIBUTION. 339 



stations lxxxviii, lxxxvii, and xciii, at doptlis of S8S, 1,113, and 1,405 meters, 28 aneci- 

 mens having been taken ft'om the last-named locality. 



The Blale seemed specimens from station rccxxvx, in 33° 42' 1.5" N. lat., 7G^ 00' 50" 

 W.lon., at a depth of 404 fathoms; from station cccxxv, in 33° 35' 20" jST. hit., 76° W. Ion. 

 at a depth of 047 fathoms; from station clxvi, off Guadeloupe, at a depth of 734 fathoms- 

 and from station xrr, off Dominica, at a depth of 082 fathoms. And the AlbatroxK from sta- 

 tion 2115, in 35° 40' 30" N. lat., 74° 34' 45" W. Ion., at a depth of 843 fathoms; from station 

 2485, in 28° 51' K lat., 88° 18' W. Ion., at a depth of 730 fathoms; fi-om station 25.53, in 39° 

 48' iS^. lat., 70° .30' W. loii., at a depth of 551 tathoms; from station 2140, in 17° 30' 10" X. 

 lat., 76° 40' 05" W. Ion., at a depth of 000 fathoms; from .station 2302, in 28° 47' .30" N. lat. 

 87° 27' W. Ion., at a depth of 724 fathoms; from station 2303, in 28° 43' X. lat., 87° 14' 30" 

 W. Ion., at a depth of 525 fathoms; Cat. No. 33447, U. S. N. M., from station 2072, in 41° .53' 

 N. lat., 62° 35' "W. Ion., at a dejith of 858 fothoms; Cat. Xo. 35.586, U. S. X. M., from station 

 2216, in 39° 47' X. lat., 70° 30' 30" W. Ion., at a depth of 963 tathoms; Cat. Xo. 34906, U. S. 

 X. M., from station 2117, in 15° 24' 40" N. lat., 63° 31' 20" W. Ion., at a depth of 983 fathoms; 

 Cat. Xo. 35657, U. S. X. M., from station 22.34, in 39° 09' X. lat., 72° 03' 15" W. Ion., at a 

 depth of 810 fathoms; Cat. Xo. 355.53, IJ. S. X. M., from station 2216, in 39° 47' X. lat., 70° 

 30' 30" W. Ion., at a depth of 0(i3 fathoms; and Cat. Xo. 35.5.55, (J. S. X. M., from station 

 2204, in 30° 30' 30" X. lat., 71° 44' 30" W. Ion., at a depth of 728 fathoms. 



MIXONUS, Giinther. 

 Mixonus, GuNTHER, Challenger Report, xxii, 1887, 108. 



The lower pectoral rays are free, not united by membrane with, but inserted on the 

 same base as the upper part of the tin. They are butslijilitly stroiij;er tliau the other rays 

 and prolonged. Body elongate, compres.sed, covered witli small, very thin and deciduous 

 scales. Head slightly compressed, broad and flat above, depressed in front, naked (with 

 the exception of the parts between the mandibles, and perhaps the cheeks). Bones thin, 

 with the inuciferous system moderately developed, only one small spine above on the 

 operculum; preopercidnin without spine. Eye small. Vertical fins united, but the narrow 

 caudal projecting beyond the short dorsal and anal rays. "Wntrals each reduced to a 

 filament, which consists of 2 rays firmly bound together in their whole lengtii; they are 

 inserted behind the humeral symphysis and close together. Snout broad, rounded, scarcely 

 overlapping the lower jaw. Mouth very wide; villiform teeth in the jaws, on the vonu'r 

 and palatine bones. Gill laminiie short; gill-rakers long, not very closely set. Pseudo- 

 brauchiie none. 



" I have long hesitated," writes Giinther, " to describe this fish under a distinct generic 

 name. The specimen is small, unique, and not in the best state of preservation, so tliat 

 several of the characters assigned here to the genus may have to be amended when other 

 specimens are obtained. Its pertinence to either I'teroidonus or Dicrolcnc seems to be doubt- 

 ful on account of the difference in the shape of the head.-' 



MIXONUS LATIC'EI'S, GuNTHER. (Figure 29C, A.) 



Bathynecfes laikepa, Gi'TXTHEE, Ann. .anfl Mag. Nat. Hist., 1878, n, 5th ser., 20. 

 Mixoniis Jaiiccpn, (Junthf.r, Challenger Report, xxii, 1888, 108, pi. xxv, iig. 8. 

 Sirembo Giiniheri, Vaillant, Exp. Sei. Travailloiir et Talisman, 1880, 208, pi. xxiv, fig. 5. 



Head slightly, body and tail more strongly compre.ssed, low; tlie latter produced into 

 a moderately long filament. I''ye rather small, its diameter being one-seventh of the 

 length of the head, two-thirds of tliat of the snout, and two fifths of the interorbital 

 space, which is convex. The posterior nostrils are wide; the muciferous cliannel of the 

 infraorbital ring shows in its course 5 or 6 wide sinuses, and opens in front by a wide aper- 

 ture. Mouth very wide, extending far behind the eye, with tlie extremity of tlie maxiUary 

 much behind the eye, and much dilated. Vomerine baud of teeth V-shaped, with the two 

 arms of the figure straight; palatine band narrow. 



