58 



merited) skin; above each eye is a prominent, coarse, procumbent spine. 

 Mouth moderately large, its cleft obliquely ascending ; the length of the maxilla 

 is one-third that of the head ; a narrow band (?) of small teeth in each jaw and 

 on the vomer ; tongue large ; only the floor of the mouth pigmented. 



Gills 2: 2 ; gill-opening a small circular aperture just beneath the root of the 

 pectoral fin. 



Skin thin and perfectly smooth and scaleless ; it is protected by a thick 

 coat of mucus. 



Two clavate cephalic tentacles, the first being rather more than twice the 

 length of the second, situated close together in the after part of the interorbital 

 space, with luminous organs imbedded in their enlarged tips. Second dorsal 

 and anal placed far back on the tail, almost in contact with the caudal, which is 

 pointed and in length a little more than one-fourth of the total ; all the rays 

 of the vertical fins simple ; pectorals very short, pointed ; ventrals absent. 



Colours : — Body and fins jet-black ; in spirit the tip of the cephalic ten- 

 tacles become white. Pharyngo-branchial and peritoneal membranes unpig- 

 mented. 



One specimen, 1- inch long from the Bay of Bengal, 1260 fathoms. 



Re^d. No. 12840. 



"t3 



Chaunax, Lowe. 



Chaunax, Lowe, Trans. Zool. Soc. III. 1849, p. 339 : Giinther, Cat. Fishes, III. p. 200 and Challenger Deep 

 Sea Fishes, p. 58: Goode and Bean, Oceanic Ichthyology, p. 487 : Jordan and Evermann, Fishes N. America, III. 

 p. 2726. 



Head enormous, cuboidal. Skin covered with minute prickles. Mouth- 

 cleft wide, approaching the vertical, the lower jaw heavy and prominent. 

 Bands of small teeth in the jaws and palate. 



Spinous dorsal reduced to a short tentacle situated on the snout. Soft 

 dorsal of moderate length. Anal short. Ventrals present. 



Gills two and a half : no pseudobranchias. No pyloric ca?ca. 



37. Chaunax irictus, Lowe. 



Chaunax pictus, Lowe, Trans. Zool. Soc. III. 1849, p. 339, pi. li : Giinther, Cat. Fishes, III. p. 200 and 

 Challenger Deep Sea Fishes, p. 58, pi. x. fig. A : Goode, Proc. U. S. Nat. Mus. III. 1881, p. 470: Jordan and Gilbert, 

 Bull. D. S. Nat. Mas. XVI. p. 846: Vaillant, Exp. Sci. Travaillenr et Talisman, Poiss. p. 343, pi. xxviii. figs. 

 1-11 : Alcock, Ann. Mag. Nat. Hist. Nov. 1889, p. 381 : Goode and Bean, Oceanic Ichthyology, p. 487, fig. 398. 



Chaunax fimbriatm, Ililgendorf, Sitzungsb. Ges. Naturf. Freunde, 1879, p. 80 : Steindachner and Doderlein, 

 Denk. Ak. VVien XLIX. 1885, p. 194. 



B.7. D.I. 11. A. 6-7. P. 11. V. 4.. C. 8. 



Shape like that of Diodon or Tetrodon. 



