26 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 59. 



In describing Salmo virginalis 'Girard 2 writes: 



Specimens collected by the party under Lieut. Beckwith in Utah Creek, and at 

 Sangre de Criato Pass, upper waters of the Rio Grande del Norte (Rio Bravo). 



According to the narrative the party reached Sangre de Cristo 

 Creek, a tributary of the Rio Grande, August 13, 1853, and, passing 

 down the stream, camped for 10 days on Utah Creek ("Ute Cr." of 

 some maps), when trout and perhaps other fishes were collected. 

 Through some oversight Jordan and Evermann 3 have used the 

 name S. virginalis for the trout of Utah Lake and the Bonneville 

 basin generally, and also Evermann and Kendall 4 have accepted 

 S. spilurus for the Rio Grande trout, not following Cope, 5 however, 

 for they regard S. virginalis as synonymous with S. spilurus. It 

 now appears that the Rio Grande trout should be known as S. vir- 

 ginalis (ignoring Cope's contention that two species inhabit the 

 Sangre de Cristo and Utah creeks), while Sucklej-'s name, S. utali, is 

 restored to the Bonneville form. 



Siboma atraria is said to have been taken from a spring in the 

 desert of Utah. The United States National Museum records the 

 locality as "near 38° latitude." The type specimen. No. 236, is 

 somewhat over 6 inches long, the caudal fin being broken. There 

 are 8 dorsal and 8 anal rays, 56 scales in the lateral series, 30 be- 

 tween occiput and dorsal, 12 above the lateral line. The head meas- 

 ures 0.28 of the length; depth, 0.28; depth caudal peduncle, 0. 11; 

 snout to occiput, 0.22; snout to dorsal, 0.54; snout to ventral, 0.56. 

 The gillrakers, numbering 11, are short and pointed. The species 

 represented by this specimen is widely distributed in the Bonneville 

 basin, where it abounds in favorable places, frequently inhabiting 

 springs and spring pools. It is very probable that the type came 

 from Fish Springs in the southern part of Tooele County, Utah, as 

 will appear. 



The narrative and maps offer no evidence that Creutzfeldt collected 

 the type of this species, but it seems that it was secured in 1854, 

 when the party again faced the west after wintering at Salt Lake. 

 On May 13 they reached an oasis where were "fine large springs of 

 fresh water, sending out considerable streams on the plain. They 

 were surrounded by large meadows of excellent grass. These springs 

 are filled with small fish, and the Indians therefore give them the 

 name of Pangwitch or Fish Springs." A stop of two or three days 

 was made at this place, providing time for collecting and preserving 

 specimens. These springs with their numerous fishes still remain — 

 the center of an oasis in a forbidding desert — and they may without 

 much doubt be regarded as the type locality of S. atraria. 



The species has been regarded as synonymous with Tigoma lineata 

 Girard, but the present writer finds no facts in support of that iden- 



» Proo. Acad. Nat. Sci. Phila., 1856, p. 220. 

 8 Fishes N. and M. America, p. 495. 

 < Bull. U. S. Fish Com., for 1892, p. 106. 

 'Hayden's Geological Survey Montana, 1871, p. 470. 



