FISHES OF OREGON AND NORTHERN CALIFORNIA. 181 
25. Hybopsis crameri, new species. 
This species, which is apparently very different from any other in the genus, is distinguished by 
having the teeth in 2 rows, the grinding surface being at the same time well developed, and in possessing 
amarkedly deep and compressed body with a relatively slender caudal peduncle. It is the only species@ 
known to occur west of the Rocky Mountains. It has been found in the Willamette and Umpqua rivers. 
Head 4 in length, depth 3.4, depth of caudal peduncle 2.5 in head, dorsal 8, anal 7, scales in lateral 
line 37, above lateral line 7, between occiput and dorsal 16. 
Body notably deep and compressed, the caudal peduncle slender; width of body contained 2.5 
times in the depth. Dorsal contour evenly curved and gradually rising from occiput to origin of dorsal, 
from which point it rapidly falls along base of fin, then curves more evenly and gently to base of caudal; 
profile concave oyer eye, the snout blunt; ventral outline evenly rounded from throat to end of anal 
base. Eye round, located in anterior half of head; interorbital space convex, its width contained 2.5 
times in head; mouth oblique; jaws equal; premaxillary protractile, its length equal to diameter of 
orbit, reaching posteriorly to or slightly beyond edge of orbit; a minute barbel on the lower posterior 
edge. Pseudobranchiz present; gillrakers very short and blunt, some of them mere knobs, 5 on 
FiG. 5.—Hybopsis crameri, new species. Type. 
first arch. Teeth rather slender, in 2 rows; 4 in the major row, slightly hooked and with a narrow 
grinding surface; 1 in the minor row. Alimentary canal short, coiled like the letter S. Peritoneum 
silvery, sparsely stippled with black in the dorsal region. 
Scales large and regular. Lateral line complete, decurved on 3 scales near its origin, then running 
nearly straight alongside of body to base of caudal. 
Origin of dorsal fin midway between anterior edge of orbit and base of caudal; longest ray con- 
tained about 4.25 in the length. Origin of anal below base of last dorsal ray; height of fin contained 
aGiinther described a species of Hybopsis ( Ceratichthys cwmingii Giinther, Catalogue fishes of British Museum, vol. 
VU, p. 177), the types of which are said to be from California. Besides minor differences it is unlike H. crameri in having 
10 dorsal and 9 anal rays, finer scales,and deeper body. The following description of Dr. Giinther’s types was made by 
Mr. Edwin Chapin Starks while studying in the British Museum: 
2 specimens, 2.75 and 2.5 in. long. 
Head 4-4.1 in length; depth 4.75; depth of caudal peduncle 2.5 in head; dorsal rays 10; anal 10; seales in lateral line 
44 (tubes 42); above lateral line 6.5; between occiput and dorsal 20-22. 
Body rather elongate, the caudal peduncle comparatively deep. Posterior edge of eye in middle of head; width of inter- 
orbital space contained 3 times in head; mouth oblique; jaws equal; premaxillary protractile, its length a little greater 
than diameter of orbit, reaching posteriorly to or slightly beyond edge of orbit. 
Scales small; Jateral line complete, decurved on 4 or 5 scales near its origin, then wavy or irregular along side of body 
to base of caudal. 
Origin of dorsal fin midway between anterior edge of orbit and base of caudal; the longest ray contained about 5.33 times 
in the length. Origin of anal a little behind base of last dorsal ray; height of fin 6 in the length. Pectorals a little longer 
than ventrals, 5in the length. Caudal deeply forked, 4.25 in the length. ~ 
A fairly conspicuous dark band extending along the side posteriorly to base of caudal; upper parts of body uniform 
light dusky; a narrow, median dusky band extending from occiput to dorsal fin. 
