Fishes of Massachusetts. 501 
torals, three and a half inches in circumference ; 
three inches around the head, one and half inches 
from the snout; circumference of the head in front 
of the eyes, one inch four lines ; from the tip of the 
lower jaw to the anal fin nine inches six lines ; cir- 
cumference of the body at the origin of the dorsal 
fin, three inches six lines; width of the body over 
the pectorals seven lines; width between the eyes, 
three lines. Lateral line, exceedingly distinct, ap- 
pearing to divide equally the darker colored back 
from the beautiful lighter silvery abdomen. For the 
extent of six inches in front of the anal orifice, a 
well marked line or furrow resembling in appearance 
the lateral line. 
Family II. e | 
ANGUILLIDAE. Vm 
Ammopytes. Lin. 
Generic characters. Head and body elongated ; 
gill-openings large; dorsal fin extending nearly the 
whole length of the back; anal fin of considerable 
length ; dorsal and anal fins separated from the 
caudal fin. ; | 
A. tobianus. Bloch. The Sand Eel. 
Yarrell's British Fishes, vol. ii. p. 317, et fig. 
Richardson in his “ Fauna Boreali-Americana,” 
Observes, that as neither Pennant nor Mitchell has 
à described the species of “ Ammodytes” which they 
DNO Se 
OR AA 
