ANGUILLIDA. — XL. 89 
215. EB. reticulatus Le Sueur. EASTERN PicKEREL. Head 
long, 34; snout 24 in head, eye 3} in snout. Greenish, with 
numerous narrow dark lines and streaks, mostly horizontal and 
more or less reticulated; fins plain; depth 5. L. 30. Me. to Ala., 
abundant in coastwise streams, not W. of Alleghanies. (Lat., 
having a net-work of marks.) 
aa. Cheeks entirely scaly; lower half of opercles bare; B. 14; D. 16 or 17; 
A. 13 or 14; scales about 123. 
216. B.lucius L. Pike; Nortaern Pickerer. Head long, 
34; snout 23 in head; eye 3 in snout; eye placed as in preceding. 
Grayish, with many round whitish spots; the young with pale 
bars; D., A. and C. spotted with black; a white horizontal streak 
bounding naked part of opercle. Depth 5. L. 30 to 50. N. Eur., 
Asia, and N. Am. from L. Champlain to N. Ind. and N. W. to 
Alaska; abundant, N. (Eu.) (Lat., pike.) 
aaa. Cheeks as well as opercles scaleless on the lower part; B. 17 to 19; D. 
17, A. 15; scales about 150. 
217. EH. masquinongy (Mitchill). MuskALLUNGE. MASKINONGY. 
Head large, 33; snout 24 in head; eye 4 to 5 in snout; eye placed 
as in EH. reticulatus. Dark gray, sometimes (var. immaculatus Gar- 
rard) immaculate, usually with small round blackish spots on a paler 
ground; fins spotted with black. Depth 6. L. 8 feet. A magni- 
ficent fish, one of the largest in fresh waters. Great Lake region 
and N. W.; occasional in the Ohio valley. “A long, slim, strong, 
and swift fish, in every way fitted for the life it leads, that of a 
dauntless marauder.” (Hallock.) (The Indian name.) 
OrveER XV. APODES. (Tue EELs.) 
Scapular arch free from the cranium; no precoracoid arch} 
body much elongate, with many vertebrz; no ventral fins; maxil- 
laries and premaxillaries united with other bones or else wanting ; 
pharyngeal and opercular bones more or less deficient; no fin 
spines; gill openings narrow; no pseudobranchie; scales minute 
or wanting. A large group, as yet of uncertain boundaries, com- 
posed of degenerate Physostomi, its origin and relationship as yet, 
however, uncertain. Most of the Hels are tropical and marine, and 
many belong to the deep seas. Numerous genera and species not 
here included occur in the deep waters off our coast. (a, privative ; 
movs, foot.) 
Famity XL. ANGUILLIDA. (THE True EELs.) 
Body compressed, covered with small, imbedded scales, linear in 
form, placed obliquely, some of them at right angles to others ; lat- 
eral line present; head long; mouth large, the lower jaw project- 
