FISH FAUNA OF LAKES OF SOUTHEASTERN OREGON. 101 
There are some pronounced variations of a local nature. Examples from the region of Silver Lake 
have the small black spots usually absent on the head and sparsely scattered along the back, becoming 
somewhat larger and more plentiful posteriorly, but not extending on the sides. The oval spots along 
the lateral line are very large, extending upward well toward the back. Specimens from Cottonwood 
Creek have few spots on the head and anterior parts of body, but are otherwise colored after the usual 
pattern. The number of scales in the lateral series is as follows: Chewaucan River, 147 to 151; Honey 
Creek, 154 to 178; Buck Creek, 146 to 160; Cottonwood Creek, 153 to 168; Silver Creek, 156 to 174; the 
data based on 10 specimens from each locality. 
There is some question as to whether the trout of the region is indigenous, testimony on the point 
being frequently conflicting. For example, the writer was informed by certain old residents of the 
Warner Lake region that no native trout was found there, the streams having been artificially stocked, 
while other residents felt just as certain that although fishes were introduced from other localities, native 
trout had always been plentiful. 
Cottus gulosus (Girard). 
Drew Creek, Lake County, Oreg. (1 example, dorsal vu, 19, anal 14); Pitt River, near Canby 
(1 example, dorsal vi, 19, anal 13). Both have a prickly area beneath pectoral, about as long as the 
snout; dorsals joined, the membrane extending upward on first ray a distance equal to diameter of 
pupil; teeth on vomer, none on palatines. 
‘ Cottus punctulatus (Gill). 
About 30 specimens, measuring from 35 to 90 mm., were collected in Silver Creek, Harney County. 
The lateral line extends almost as far posteriorly as the base of soft dorsal, in some examples being quite 
complete. The body is entirely smooth in every case. Of 20 specimens examined 13 have the dorsals 
separate, the space between them sometimes being nearly as wide as that between two rays; 7 have the 
fins joined at their bases, the membrane, however, not extending upward on the first ray. Five indi- 
viduals have 3 preopercular spines, while 15 have 4. In all cases the fourth spine is very minute. In 
1 example with 3 spines the lowest is barely visible. The spines are sharper and more prominent on 
smaller individuals All have narrow bands of palatine teeth. 
In many specimens the fourth ventral ray is small, occasionally being difficult to find. In one indi- 
vidual it is entirely absent. The apparent variability of this character, together with the fact that the 
specimens agree closely with the description of Uranidea bendirei (Bean)¢ has led to the supposition that 
the latter may belong to the genus Coftus, being nothing more than an example of C. punctulatus in 
which but 3 of the ventral rays are well developed. 
This species is very similar to C. perplerus, one of a series of 3 closely related forms extending 
southward in the coastwise rivers, at least to the Sacramento. They are C. perplexus of the Columbia, 
C. klamathensis of the Klamath, and C. gulosus of the Sacramento. Nothing is known of the distri- 
bution of these species in other basins than those mentioned. 
TaBLE SHOWING NUMBER OF SPINES OR Rays IN THE FINs oF 20 SPECIMENS OF Corrus PUNCTULATUS 
FROM SmLver CreEK, HARNEY County, OREG. 
Specimens Specimens 
Spines or rays. showing Spines or rays. showing 
character. character. 
Spinous dorsal: 
( Saooereeeeeeee ee 12 3 
Bee cla <nin c= <n RT. oo ce 13 1 
Soft dorsal: 
8 1 
15 5 
2 14 
4 5 
17 
aBean, T. H., Proc. U. S. National Museum, 1881, p. 27. Potamocottus bendirei, Rattlesnake Creek, near Camp 
Harney, Oreg. 
> Writing in this connection Mr. B. A. Bean says: ‘‘I have examined the type of Potamocottus bendirei and find that 
the ventral of the right side has1,3+. The + is represented by a rudimentary ray showing through the skin, especially 
at the base. The left ventral has 1,3. I find no trace of a rudimentary ray.” 
