248 



DEEP SEA FISHES. 



between the origin of the anal and the bases of the longest caudal rays. 

 Scales thin deciduous ; clieeks naked. 



Origins of dorsal and anal opposed, little behind the middle of the entire 

 length. Pectorals narrow, long, reaching behind the bases of the ventrals. 

 Ventrals small, nearer to the anal than to the pectorals. Caudal notched. 



Blackish to brown, with puncticulations and dots of black on body and 

 fins ; belly black. A round black spot above the maxillary below the 

 forward part of the eye. 



Tlie original description of C. microdon of Gunther, 1878, Ann. Mag. Nat. 

 Hist., p. 187, is as follows : " D. 13 ; A. 18-21. Cheek naked. Teeth in the 

 upper jaw very fine and numerous, with some larger ones placed at regular 

 intervals. Eyes small." "Atlantic and Pacific, 500-2900 fathoms." Goode 

 and Bean, 1896, Oc. Ich., p. 100, add to this in the description of Ci/dothone 

 Inscn, identified by Gunther with C. microdon Glint., branchiostegal rays 

 7-9, ventral rays 5, and vomerine teeth '"' sometimes in patches, sometimes 

 reduced to a single pair of fangs." The type indicates tliat some error has 

 crept into this, as there are thirteen branchiostegal and seven ventral rays 

 and the vomerines have a short series of four teeth on each side. The 

 specimen has twelve luminous organs in each branchiostegal series, and 

 there are seventy-eight maxillary teeth, of which about half incline forward, 

 but not so much as on C. accUnidens, and eighty teeth on the lower jaw of 

 which about fifty are more or less inclined forward. On specimens of tlie 

 same size the maxillary teeth of C. ciccHnidens are fewer in number, larger 

 in size, and more crooked than those of C. microdon. 



