SHORE FISHES OF GALAPAGOS ISLANDS 



359 



eracanthous and depressible in a groove ; soft dorsal higher and more 

 convex than spinous dorsal, longest ray 2-f in head ; first anal spine 

 very short, scarcely projecting beyond its sheath; third considerably 

 enlarged, much stouter than fourth which it equals in length; soft anal 

 rounded and similar in shape to soft dorsal, but exceeding it slightly 

 in height ; caudal forked, the lobes rounded and equal ; scales at base 

 of caudal, above and below, forming sharp serrations; pectoral broad, 

 somewhat rounded, of 17 rays of which the upper ones are longest. 

 Scales closely imbricate, and armed on their posterior edges with long, 

 slender, spine-like serrations, the bases of which project on the scales 

 as low ridges ; spines of scales on posterior part of body longer than 

 those of anterior parts, and almost obscuring the scales themselves ; 

 caudal fin scaled on basal half, otherwise fin-membranes naked ; lateral 

 line continuous and extending the entire length of body, concurrent with 

 back anteriorly, less curved posteriorly. 



Variations. The other specimen differs from the one just described 

 in having 2 spines on the angle of the preopercle, longer serrations 

 on the scales of the posterior part of the body, fewer (38) scales on the 

 lateral line, and serrations on the posterior edge of the supplemental 

 maxillary. 



Color in life* Above bright cardinal-red, lower part of sides and 

 belly silvery-red ; iris and fin-rays like the back, the membranes of the 

 latter yellowish ; ventrals silvery-red like the belly. 



MEASUREMENTS, FIN RAYS AND SCALES OF HolotrachyS lima. 



The 2 Cocos specimens are greatly swollen, to which fact is prob- 

 ably due the difference in depth between the Cocos and Hawaiian 

 specimens. 



