[61] FLOUNDERS AND SOLES. 285 
Habitat.—Puget Sound (probably northward to Alaska). 
This species is known only from four speciméns taken by Dr. Jordan 
at Seattle in 1880. It is a large rough flounder, with firm white flesh. 
Genus XXX.—ISOPSETTA. 
Isopsetta Lockington, MSS., Jordan & Gilbert, Synopsis Fish. N. A., 1883, 832 (iso 
lepis). 
TYPE: Lepidopsetta isolepis Lockington. 
This genus consists of a single species found on the coast of Califor- 
nia. It approaches in many respects very close to the large-mouthed 
flounders of the type of Hippoglossoides, and it may fairly be said to 
be intermediate between Psettichthys and Lepidopsetta. Its affinities on 
the whole seem to be nearest the latter. 
ANALYSIS OF SPECIES OF ISOPSETTA. 
a. Body elliptical, much compressed, its outlines very regular; eyes rather large, the 
upper 44 in head, the interorbital space broad, flattish , and scaly. Scales rather 
large, ctenoid, closely imbricated ; maxillary 3% in head ; teeth bluntish, conical, 
close-set, but not forming a cutting edge. Lower pharyngeals each with two 
rows of bluntish teeth ; lateral line with a slight arch in front, and an accessory 
branch nearly as long ashead. Head 4; depth2}. D.88; A. 65; lat. 1.88. Colo, 
dark-brown, mottled and blotched with darker. Vertebre 10+ 32—42. 
ISOLEPIS, 73. 
73. ISOPSETTA ISOLEPIS. 
Lepidopsetta wmbrosa Lockington, Proc. U. 8. Nat. Mus., 1879, 106. (San Francisco ; 
not of Girard.) 
Lepidopsetta isolepis Lockington, Proc. U.S. Nat. Mus., 1880,325. (San Francisco.) 
Parophrys isolepis Jordan & Gilbert, Proc. U.S. Nat. Mus., 1880, 453, 1881, 67 (Puget 
Sound, San Francisco). Jordan & Gilbert, Syn. Fish. N. A., 1882, 832. Jor- 
dan, Nat. Hist. Aquat. Anim., 1884, 186 (Monterey to Puget Sound). 
Tsopsetta isolepis Jordan, Cat. Fish. N. A., 1885, 136. 
Habitat.—Puget Sound to Point Concepcion, in rather deep water. 
This small flounder is rather common off the coast of California, 
where it reaches a length of about 15 inches. It much resembles Psei- 
tichthys melanostictus, but its small mouth and blunt dentition indicates 
a real affinity with the small-mouthed flounders, among which it is here 
placed. Its nearest relative among our species is doubtless Lepidop. 
setta bilineata. 
Genus XXXI.—LEPIDOPSETTA. 
Lepidopsetta Gill, Proc. Ac. Nat. Sci. Phil., 1864, 195 (wmbrosus). 
Type: Platichthys umbrosus Girard = Platessa bilineata Ayres. 
This genus probably contains but a single species, abundant on the 
Pacific coasts of North America. It is close to Inopsetta, from which it 
is separated by the arcb of the lateral line, and still closer to Limanda, 
from which the accessory branch of the lateral line alone separates it, 
