FISHES OF THE KLAMATH BASIN. 
11 
of the posterior pair nearest together; distant from these a single median pore on posterior portion of 
iuterorbital space, from which diverge two lines of pores around the back of the orbits. 
The spinous dorsal is short and low, the longest spine usually less than two- thirds the longest soft 
ray. The two fins are very broadly joined. Distance from base of last dorsal ray to base of caudal 
slightly less than depth of caudal peduncle. Caudal short and broadly rounded, its length 11 in head. 
Pectorals very short, usually not reaching vertical from front of anal, 1| in head. Ventrals large, 
sometimes reaching vent, hut usually shorter, If in head. Caudal with 9 (sometimes 8 or 10) forked 
rays ; rays of other fins, including all pectoral rays, simple, unbranclied. 
Skin mostly naked, the young with a narrowly oblong patch of prickles below the lateral line and 
under the posterior half of pectorals. These become gradually absorbed with age, adults being nearly 
or quite naked. Lateral line very incomplete, the last pore under some portion of the anterior half 
of soft dorsal in all our specimens from the lake. From the last pore a shallow open groove or trace 
follows the course of obsolete portion of the canal. In four specimens from Klamath River below the 
falls, and in one collected by Mr. E. C. McGregor in Scott River, Siskiyou County, California (a 
tributary of Klamath River), the lateral line is much more nearly complete, ending under the last 
fifth of soft dorsal. 
Color brownish-olive, with four or five indistinct dark bars downward from hack, breaking up 
below into narrow bars which may unite to form V-shaped markings, or often into mere irregular 
blotches. A narrow bar at base of tail. Caudal with broad dark bars alternating with much narrower 
light ones. Dorsal and anal with somewhat narrower oblique bars. Pectorals very conspicuously 
checkered, the dark and light spots on the rays arranged in vertical series. 
14. Cottus evermanni, new species. 
Type, No. 48228, U. S. Nat. Mus. Type locality, Lost River near Lostine, Oregon. (C. H. Gilbert, 
Frank Cramer, K. Otaki, collectors.) 
Characterized by the long slender body entirely covered with coarse prickles, the short spinous 
dorsal very broadly united to the very long soft dorsal, the long anal fin, the incomplete lateral line, 
the very large pores on head, the branched pectoral rays, and the absence of any distinctly projecting 
preopercular spine. 
Head 3 1 in length; depth 5; depth of caudal peduncle 2f in greatest depth. D. vn, 21; A. 18; 
P. 16; Y. i, 4. 
Head small, depressed, narrowing rapidly forward, the snout more acutely rounded than in C. 
punctulatus. Mouth with distinct lateral cleft, the maxillary reaching a vertical immediately in 
