190 



BULLETIN 150, UNITED STATES NATIONAL MUSEUM 



Body comparitively robust, dorsal outline descending very grad- 

 ually to the caudal. Head compressed; cheeks vertical; interorbital 

 flat; occiput deep; profile rounded. Mouth terminal, pointing 

 obliquely upward; maxUlary reaching below the pupil. Teeth ex- 

 tremely small, mere conical tubercles, difficult to see with a hand lens, 

 in a single series, not close set; possibly absent at the symphysis; 



Figure 106.— Nectoliparis pelagicus. Pectoral girdle with five bkancheostegal rays 



not seen in upper jaw. Snout short, abrupt, 3 in the head; jaws 

 nearly equal, the lower jaw appearing larger when the mouth is open. 

 Nostril with a raised rim. Eye large, prominent; pupU round. The 

 gUl slit is confined to the front of the upper pectoral lobe and extends 

 in front of 14 rays. One suprabranchial pore; upper snout pore high, 



Figure 107.— Nectoliparis pelagicus. Type. Showing location of vent and pecular 



pectoral 



higher than the nostril; nostril nearly between the two snout pores; 

 six pores on the maxillary and about the eye, six or more in a series on 

 the mandible and cheeks. No prickles. Pyloric coeca 8, one-half 

 the eye, on the left side. 



Dorsal origin far back, over the tip of the pectoral. Caudal 

 truncate, of four or six rays, connected for nearly one-half the length 



