820 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY — IV. 
very small, not ciliated. Head 4; depth 3. D. 100; A. 75. Green- 
land to Cape Cod, common northward, reaching a very large size. 
(Pleuronectes hippoglossoides Walbaum, Artedi, Pise. 1792, 115: Hippoglossus green- 
landicHS Giiuther, iv, 404.) 
453.— ATHERESTIIES Jordan & Gilbert. 
(Jordan & Gilbert, Proc. U. S. Nat. Mus. 1880, 51: type Platgsomatichthys stomias 
J. & G.) 
Eyes and color on the right side. Body very long and slender, 
closely compressed, tapering into a long and slender caudal peduncle; 
head elongate, narrow; mouth extremely large, oblique, the long and 
narrow maxillary extending beyond the eye; both jaws with 2 irreg- 
ular series of sharp, unequal, arrow-shaped teeth, some of them long 
and wide-set, the others short and close-set, sharp; the long teeth 
freely depressible. Gill-rakers numerous, long, slender and stilf, 
strongly dentate within. Scales rather large, thin, and readily decid- 
uous, slightly ciliated; those on the blind side similar, smooth; lateral 
line without arch. Fins low and fragile. Dorsal commencing over the 
eye, its anterior rays low, the posterior rays somewhat forked; no ajial 
spine; pectorals and ventrals small, both of the latter lateral; caudal 
lunate. (a(9r;^, arrow; oJwv, tooth; from the arrow-shaped teeth.) 
1363. A. f^tomias Jordan & Gilbert. 
Plain olive brown, the margins of the scales darker; blind side dusted 
with black points. Head long, the snout protruding, somewhat truncate 
at tip; mouth excessively large; the maxillary more than half the length 
of the head, and reaching behind the eye; teeth in upper jaw anteriorly 
in a single series, long, slender, and wide-set, much smaller and closer- 
set behind; on sides of jaw the teeth are very small, and in 2 distinct 
series, the inner of which corresponds to the single series in front, the 
teeth thus gradually increasing iii size forwards; teeth in inner series of 
lower jaw very sharp and slender, longer than the upper teeth, wide- 
set, alternating with shorter, depressed teeth; outside of these larger 
teeth is a series of fixed small teeth; all of the long teeth in both jaws 
depressible and conspicuously arrow-shaped towards their tips; inner 
series of small teeth in upper jaw also arrow-shaped, depressible; eye 
large, 4f ifi head ; interorbital space scaly, ridged, not a third the width 
of the eye. Gill -rakers long and strong, about 17 in number (in total), 
the longest more than half the diameter of the eye. Upper eye with 
its range entirely vertical. Scales extremely thin, irregular in size, not 
