FISHES. MCCULLOCH. 179 



Family CHAULIODID^. 



Genus Chauliodus, Block cfc Schneider. 



Chauliodtjs dannevigi, sp. nov. 



(Plate lii.) 



D.6 ; A.12 ; P.13 ; V.7 ; C.19 ; 1. lat. 59 ; 1. tr. 5. Head, 

 measured from the premaxillary symphysis to the end of the 

 operculum, 7.6 in the length from the premaxillary symphisis 

 to the hypural joint. Greatest depth of the head almost equal 

 to its length. Depth of the body anterior to the dorsal fin 

 1.4 in the head. Longitudinal diameter of the eye equal to 

 its distance from the end of the snovit, 4.2 in the head. 

 Space between the pectoral and ventral fins 1.5 in that be- 

 tween the ventrals and the anal, and 3.1 in the length from 

 the end of the operculum to the hypural. Longest ventral 

 ray once and a-half as long as the head. Longest pectoral 

 ray 1.3, and base of anal 1.6 in the head. 



Body elongate, compressed ; it is deepest directly behind 

 the head but the depth decreases rapidly to a point in front 

 of the dorsal fin, whence it diminishes regularly to the tail. 

 Head short and deep, its length a httle less than its distance 

 from the vertical of the last dorsal ray ; it is rounded above, 

 with raised bony ridges, and there is a small median ridge 

 on the occiput. Interorbital space concave, the mdth of its 

 bony portion equal to the longitudinal diameter of the eye. 

 Snout forming a sharp conical point, its upper profile shghtly 

 concave. Eye deeper than long, placed in the upper half of 

 the head. Preopercular border sub-vertical, formed of two 

 bony ridges. Operculum membranaceous, forming an ob- 

 tusely angular lobe posteriorly. Maxillary narroA\', very 

 obhque, and terminating in a sharp point. Barbel minute, 

 projecting forward. 



Premaxillaries with four fangs on each side ; the anterior 

 pair is cyhndrical and acute, and not so long as the second 

 pair, which is flattened and sabre-hke ; third and fourth pairs 

 smaller, and sabre-hke ; minute teeth project outward near 

 the bases of the second and third pairs. Anterior edge of the 

 maxillary A\dth a row of small flattened teeth which increase 

 in size backward. Anterior mandibular fangs flattened and 

 curved, with minutely barbed points ; they are longer than 

 any other teeth, and reach backward to above the middle 

 of the eye when the mouth is closed ; there are seven more 

 fangs on each side of the mandible, together with some 

 secondary teeth, all of which are minutely barbed at the 

 tips ; a transparent membrane is present between the teeth 



