THE PLSHES OF NEMOJERSE Y: Bot 
Ct 
ff. Body broad ovate, very strongly compressed, its out- 
lines everywhere trenchant, anterior profile nearly 
vertical; scutes almost obsolete. VOMER 
ce. Lateral line without any scutes; body short and elevated, 
strongly compressed. SELENE 
dd. CHLOROSCOMBRIN. Dorsal outline less strongly curved than 
ventral; body much compressed, its outlines everywhere 
trenchant; armature of lateral line obsolete or nearly so. 
CHLOROSCOMBRUS 
cc. TRACHINOTINA. Maxillary without supplemental bone; anal fin 
similar to soft dorsal, its base much longer than abdomen; tail 
unarmed; pectoral short, not falcate. ee ARICA 
Genus NaucraTEs Rafinesque. Is 08 Fy Ties 
The Pilot Fishes. 
Naucrates ductor (Linnzus). 
PLATE 24. 
Pilot Fish. 

This fish closely resembles the next but may be distinguished 
by having the membrane of the dorsal spines disappearing with 
age. 
This pelagic species is apparently rare. The very young are 
furnished with a strong opercular spine, and the dorsal spines 
connected by membrane. 
Naucrates ductor Abbott, Geol. N. J., 1868, p. 814. 
¢ 
Genus SERIOLA Cuvier. 
The Amber Fishes. 
Key to the species. 
a. Dorsal rays 38 or 39. ZONATA 
aa. Dorsal rays 34. TALANDI 
Seriola zonata (Mitchill). 
PLATE 25. 
Shark’s Pilot. Pilot Fish. Banded Seriola. 
Head 3%; depth 3%; D. I, VII-I, 39; A. II-I, 19; snout 2% 
in head; eye 5; maxillary 2% ; interorbital space 2°/,,; fourth 
