422 BULLETIN 100, UNITED STATES NATIONAL MUSEUM. 



The width across the pectoral bases is distinctly less than half the 

 depth of the body below the origin of the first dorsal. Orbit. 3.2 in 

 length of head ; interorbital width, 3.3 ; snout, 3.9 ; length of upper 

 jaw, 2.6. The preopercular ridge is produced backward at its angle 

 more strongly than is the preopercular margin; only the tip of the 

 rather acute posterior lobe of the interopercle is visible behind the 

 preopercular margin. Six branchiostegal rays. 



The lateral line is indicated on the sides by the presence of several 

 scales with pores at a distance below the origin of the first dorsal less 

 than one-fourth that to the ventral surface. The type-description 

 indicates that its position was interpreted too low. There are about 

 eight scales in a series from the origin of the second dorsal to, but 

 exclusive of, the lateral line scales. 



The ventral fin is inserted below the pectoral base, slightly an- 

 terior to the origin of the first dorsal ; its distance from the anus is 

 equal to the length of the upper jaw, and is less than its distance 

 from the isthmus. 



The lining of the buccal cavity is blackish ; that of the branchial 

 and abdominal cavities, black. 



Measurements in hundredths of length to anus (29.5 mm.) . — Length 

 of head, G8; length of orbit. 21: width of interorbital, 22; width of 

 suborbital, 11 ; orbit to preopercle, 34 ; length of snout, 19 ; length of 

 upper jaw, 27; length of barbel, 20; depth of body, 63 ; width of body, 

 29; length from anus to ventral, 29; from ventral to isthmus, 30; 

 length of first dorsal base, 18. 



(camurus, crooked; in reference to the peculiar physiognomy.) 



A. CORYPHAENOIDES, species. 



Coryphaenoides, species, Weber, Fische tier Sifro#r/-Expedition, 1913, p. 154. 



There is little doubt that the species of Coryphaenoides thus noted 

 by Weber is an undescribed form ; it certainly is not included in the 

 collections of the Albatross. 



Hyomacrurus, new subgenus. 



Type-species. — Macrourus hyostomus Smith and Radcliffe. 

 Distinguished by the anterior position of the anus. 



20. CORYPHAENOIDES HYOSTOMUS (Smith and Radcliffe). 



Macrourus hyostomus Smith and Radcliffe, Proc. U. S. Nat. Mus., vol. 43, 

 1912, p. 121, pi. 27, fig. 1. 



The collection contains six specimens of this interesting species, in 

 addition to the type described by Radcliffe. 



