NO. 2149. JAPANESE MACROUROID FISHES— GILBERT AND HUBBS. 165 



The ridges on the scales are more numerous in the larger specimens. 

 These variations with size are indicated in the following table : 



Nine scales from origin of second dorsal to lateral line, excluding 

 the lateral line scale. 



The terminal rostral tubercle is similar to that of C. nasutus; it is 

 rounded, transversely oval, but with onlj^ about 7 ridges, each of 

 which is strongly armed with about 5 nearly erect spines, somewhat 

 stronger on the upper than on the lower half of the tubercle ; lateral 

 tubercles less prominent and less convex than the median tubercle, 

 with similar ridges and sjDines. 



Pyloric caeca about as long as the orbit, numbering in the five 

 specimens counted 12, 13, 13, 14, 14. 



Branchiostegals 6 ; gill membranes without a free fold ; gill-rakers 

 of first arch represented by rudimentary tubercles ; gill slit before first 

 arch one-fourth as wide as orbit. The distances between the anus 

 and base of ventral, and between the isthmus and the base of ventral 

 are each about equal to the postorbital length of the head. 



Color in alcohol, light brownish on back and sides; under side of 

 head whitish ; lower part of opercles, breast, and belly silvery, with 

 brown chromatophores ; upper part of opercles dusky. First dorsal 

 w^hitish centrally, the base and the tips of the soft rays and the 

 filament of the spine dusky; second dorsal light anteriorly, dark 

 posteriorly; anal whitish anteriorly, with a dusky margin, entirely 

 dusky posteriorly ; base and tip of ventral dusky, the middle of rays 

 whitish ; base of pectoral, the uppermost rays, and the tips of all the 

 rays duslcy, leaving a well defined whitish area. Buccal, branchial, 

 and peritoneal cavities lined with black. 



This species is common in southern Japan, especially in the East- 

 ern Sea and Suruga Gulf. C. nasutus is also common in southern 

 Japan, but the two species were never taken at the same station, C. 

 marginatum inhabiting warmer, shallower water than C. nasutus. 

 The much lighter color, the more compressed body, the firmer flesh, 

 and the general appearance of C. marginatus is correlated with this 

 distribution. 



