1886.] NEW PEDICULATE FISH. 141 



should be added one or more accessory teeth, which are quite short, 

 and are situated immediately at the base of the longest teeth ; pro- 

 bably these accessory teeth are meant to supplant the others 

 when these are shed or lost, which may often happen when devouring 

 the huge prey. 



In the intermaxillary, the longest teeth in front have a length of 

 6 millim., and are quite straight (on the left side it is not fully 

 developed) ; the other teeth are shorter, not more than 3 millim. 

 long. The total number of teeth in each intermaxillary is 8 or 9, 

 to which must be added 2-3 accessory teeth situated at the base of 

 the longest. 



In the lower jaw the two foremost teeth (and the 4th) are parti- 

 cularly long, the others somewhat shorter. In each half jaw there 

 are seven teeth, to which must be added the two accessory teeth 

 situated at the base of the longest. The innermost tooth in the jaw 

 is quite small. 



Of the two long front teeth, the first is somewhat shorter than the 

 second, considerably curved ; its length is 4"5 millim. The second 

 is the longest of all the teeth ; it is 8 millim. in length, and is also a 

 little curved. It is placed a little inside of the row of other teeth, 

 and has a short tooth at its base. The fourth has a length of 5 

 millirn., and it also has an accessory tooth ; the others are shorter. 



The upper pharyngeal bones have each a group of about six teeth 

 forming two long irregular rows. The lower pharyngeals do not 

 appear to have teeth. 



The vomer has a single tooth, which, like the pharyngeal teeth, 

 is about the length of the shorter teeth in the jaws, and is slightly 

 curved. 



Cephalic spine. — The first dorsal appears as a single tentacle on 

 the forehead (the cephalic spine). Its basal element is not sub- 

 cutaneous and procumbent, but erect and continuous with its distal 

 part. When laid back its bulb reaches to the hind margin of the eyes, 

 or just between the two orbital spines, in which position it fills up 

 the concavity on the forehead. It is situated at the front margin of 

 the snout. Its length is 10 millim., of which half comprises the 

 peduncle, which is rather thick, especially towards its base, the other 

 half the head, which forms an oblong bulb, the breadth of wliich is 

 3 millim., or about the same as the diameter of the eye. 



The bulb ends in a pair of exceedingly short and slender threads, 

 which, in a good light, can be seen to have small papilla-shaped 

 bodies on one side, of the same kind as the papillae on the guttural 

 tentacle, but much smaller (probably answering to the " scales " 

 which, according to Liitken, cover the threads of the tentacles of the 

 Himantolophoids). The colour of this cephalic spine is jet-black as 

 far as the middle of the bulb ; its other half is white (perhaps silvery 

 in the living specimen), as in most or all the other species of the 

 Ceratiidee. 



The fins. — The second dorsal is situated far behind, close into the 

 caudal fin, although separated from it by a distinct space. It has 

 three single rays, which at their base are enveloped with a thick 



