NARCETES PLURISERIALIS. 289 



the side, slightly swollen around the mouth. Mouth of medium width, 

 cleft to a vertical from the middle of the eye, rising forward ; maxillary 

 tooth-bearing, widening backward, rounded on the hind margin, with a low 

 ridge along the outside, forming about five sevenths of the mouth border; 

 intermaxillary short, two fifths as long as the maxillary spreading out 

 and forward. Teeth small, subconical, in single series on intermaxillaries, 

 maxillaries, and dentaries ; a single larger tooth, like a small fang, at each 

 side of the vomer. Eye very large, lateral, twice as long as the snout, five 

 times as wide as the interorbital space on the skull, two fifths as long as the 

 head. A sharp ridge from the angular up and forward to below the eye 

 on the mandibles. Corner below the angular prominent. Four gills ; 

 lamellie short, narrow ; raiders five plus fifteen, slender, longest two fifths 

 as long as the eye ; openings very wide ; membranes not united, free from 

 the isthmus. Opercles large, thin and membranous backward. Pseudo- 

 branchiae well developed. The narrow groove on the skull between the 

 eyes widens into a rounded concavity backward ; forward at each side of 

 it there is a shorter groove. Eight moderately long pyloric ciBca. 



Dorsal origin twice the length of the head from the end of the snout. 

 Anal origin below the twelfth or thirteenth ray of the dorsal. Ventral bases 

 very little forward of a vertical from the first ray of the dorsal ; fins reach- 

 ing behind the vent. Vent below the middle of the dorsal base. Depth 

 of the base of the caudal about half of that of the body ; fin forked. 

 Pectorals small, below the middle of the side. 



Scales large, broad, thin, flexible, deciduous ; those of the lateral line 

 half as broad as those in the series at either side of it. 



A female ten inches in length contains mature eggs one eighth of an 

 inch in diauieter. 



Intense black outside and on the linings of the entire body cavity. 



Narcetes pluriserialis sp. n. 



Phite L VII. fi,j. 3. 



Br. r. 8 ; D. 19 ; A. 1-4 ; V. 8 ; P. 11 ; LI. 105 ; Ltr. 9 + 1 + 13. 

 Resembling Narcetes crimchs Ale. to a consideralde extent in form but 

 more elongate, possessed of more bi-anchiostegal rays, of pluriserial teeth 



