NO. 2125. Fli^IIES FROM THE GULF OF CALIFORNIA— SNYDER. 585 



SALMO nUDEUS Gibbons. 



A specimen 8^ inclies long from Oak Creek appears to represent 

 fishes that have been introduced from some CaUfornia stream. It is 

 a beautiful trout with a very deep body and small head. The adi- 

 pose dorsal is short and unusually high. The dorsal half of the body 

 is closely covered with spots, sharply outlined and perfectly round 

 on the head where they are about half as large as the pupil ; smaller 

 and irregular in outline on the body, many of them somewhat 

 X-shaped. The dorsal and caudal are closely covered with very 

 small spots, the dorsal with a row of elongate ones along the base. 

 Lower half of head and body, pectorals, ventrals, and anal immacu- 

 late. No teeth occur on the tongue posterior to those of the glos- 

 sohyal. There are 140 rows of scales in the lateral series. 



Specimens of this same trout with 116 to 120 scales in the lateral 

 line and measuring about 15 inches are recorded by Doctor Meams 

 from Clear Creek. 



This creek runs in a canyon with walls over a thousand feet high. At the bottom 

 along the stream is a forest of Douglas spruce, willow, aspen, walnut, maple, box- 

 elder, pine, and hackberry. There is a dense growth of hop and grape vines together 

 with shrubs, annuals and ferns. The canyon walls are of limestone above, sand- 

 stone below. 



Color above, a dark vinaceous olive, becoming silvery below the lateral line and 

 yellowish beneath and on the opercles. Dorsal yellowish olive, thickly spotted; 

 paired fins reddish orange, obsciu'ely spotted with dusky. Back and sides densely 

 spotted with black, the spots on head, back, and adipose fin being rounded, those on 

 sides and posterior parts irregularly X-shaped. The iris is golden, as are the opercles 

 and preopercles in places. On August 13 a female full of large eggs and measuring 

 19J inches was taken in Oak Creek. The color was similar to that described above. 

 Peritoneum whitish or colorless. A smaller one, 13 inches long, differed only in 

 being whitish below. Other trout from Oak Creek were pure white below between 

 the pectoral and ventral fins; the sides to or above the lateral line, greenish yellow; 

 above lateral line the ground color was olivaceous; iris yellow; mottled with black; 

 Bides of head brassy yellow; dorsal and caudal greenish yellow. 



The stomachs often contained quantities of sand and small pebbles. Wasps, 

 grasshoppers, and grubs were frequently found there also. The largest trout caught 

 weighed somewhat more than 3 pounds. June is the best month for fishing, when 

 the trout are foimd high up toward the soiu-ce of the brook. 



Oak Creek. 



POECILIA OCCIDENTALIS (Balrd and Girard). 

 I . 



" Specimens collected by Herbert Brown in Santa Cruz River near 

 Tucson, November 20, 1893, contained eyed embryos. In one 

 example, measuring 2| inches, there were 15 such young, besides 

 many embryos and eggs in various stages of development. 



Gila River near Gila City and Adonde Siding; Santa Cruz River; 

 San Bernardino River; Cajon Bonito Creek. 



