82 bulletin: museum of comparative zoology. 



Maxillary teeth biserial, the outer row of about twenty sharp cylin- 

 drical teeth, directed backwards; inner row of about sixteen similar 

 teeth. Premaxillary probably 3 in each side (in the type all but two 

 of these teeth have been destroyed). Vomer with eighteen sharp 

 teeth on the median line, these are distinctly biserial; mandibular in a 

 single series, similar to maxillary teeth and directed backward. 



Snout pointed, short, its length 7 in head; anterior nostril in tube 

 on upper lip, even with extremity of lower jaw; posterior nostril on 

 upper lip opening downward by a rounded aperture below the anterior 

 margin of eye; eye small 2 in snout, its center about mid-way between 

 tip of snout and angle of jaws. 



Gill-openings rather wide slits below the median line, the width 

 slightly greater than their distance apart on the ventral ends. Lateral 

 line curved, the pores not prominent. 



Pectoral fins \ery minute but present and rays can be seen with a 

 lens; length about equal to eye; dorsal and anal well developed, 

 terminating very near tip of the tail; origin of pectorals on nuchal 

 region, far in front of gill-openings, its origin, in fact mid-way of the 

 length of the head. 



Color in alcohol: — uniform yellowish light brown, slightly darker 

 above; fins imiform, but there is a shaded area along each side of the 

 anal posteriorly on body. Length 450 m. 



Total length 540 m.; head and trunk 250 m.; head 30 m.; to origin 

 of dorsal 15 m. 



Differs from 0. filaria in the biserial maxillary and vomerine teeth. 



Type.— M. C. Z. 25,147. Fiji Island. Museum Godeffroy, 

 Hamburg. 



QUASSIREMUS PRODUCTUS, Sp. nOV. 



Cylindrical, elongate, the head conical, the snout projecting; upper 

 jaw the longer; tail tapering uniformly from the anal pore, to an 

 acute point, the tip naked; depth at anal pore 2.1 in head, tail about 

 equal to trunk without head. 



Head conical; its greatest width 1.1 in its greatest depth; it is con- 

 tained 11.5 in total length and 5.4 in trunk. 



Mouth moderate, closing completely; distance between tip of snout 

 and angle of jaws 2.3 in head; maxillary teeth uniserial, of sixteen 

 slightly curved conical teeth directly backwards. Premaxillary with 

 two slightly large curved teeth near end of snout; vomer with a single 



