136 A REVISION OF THE ASTACIDA. 
Another large male specimen, five inches long, in the U. 8S. National 
Museum, from T. G. Scupham, California (No. 2267), is labelled “Astacus 
Oregonensis Nutt.,” and by this name it is recorded by W. H. Dall in his 
ke Catalogue of Illustrations of the Economical Invertebrates of the Ameri- 
can Coasts,” Bull. U. S. Nat. Mus, No. 14, p. 260, 1879. Randall’s A. Ore- 
gas was collected by Nuttall in the Columbia, but was certainly not 
A. nigrescens, (See p. 133.) 
Types of A. wyrescens were sent to Dr. Hagen by Stimpson. These were 
probably afterwards destroyed in the great fire at Chicago. 
It is said by Stimpson to be common in the vicinity of San Francisco, and 
to be sold in the market of that city. 
“ Color, blackish.” Stimpson. 
The first abdominal appendages of the male A. nigrescens are incorrectly 
figured by Huxley in “The Crayfish,” p. 245, fig. 62, C, and by Brocchi in 
Ann. Sci. Nat., 6° Sér., Zool. et Shank cae 1 Pla igs Oren. 
5. Astacus Gambelii. 
Cambarus Gambelii, Girard, Proc. Acad. Nat. Sci. Phila., VI. 90, 1852, 380, 1853. 
Astacus Gambelii, AGassiz, Proc. Acad. Nat. Sci. Phila., VI. 3875, 1853. 
Astacus Ganbelii, Srreson, Journ. Bost. Soe. Nat. Hist., VI. 492, 1857. on wt 
Astacus eee Hacen, Ill. Cat. Mus. Comp. Zodl]., No, III. p. 90, Pl. I. figs. 97, 98, Pl. III. fig. 170, 
1. XI. 1870. 
Astacus oe Faxon, Proc. Amer. Acad. Arts and Sci., XX. 152, 1884. 
Known Localities. — Utah: Ogden River, Ogden. Idaho: Fort Hall (Coll. 
U.S. Nat. Mus.); west side of Teton Basin (Coll. U. 8. Nat. Mus.). Montana: 
mouth of Yellowstone River. Wyoming: Willow Creek (?). California: Santa 
Barbara (?). 
Girard’s types are in the Museu of the Academy of Natural Sciences 
of Philadelphia. One of them has been figured by Hagen. 
The female, as well as the male, has the peculiar beard on the chela. 
The lower side of the peduncles of the antenn is also barbate in both sexes. 
In some specimens the telson is notched in the middle of the hind border, 
in other specimens it is entire. 
Two dozen fine specimens of this species were collected by Mr. J. A. 
Allen at Ogden, Utah, in September, 1871. The largest of these measure 
95mm. in length. Ogden City is on Ogden River, which flows into Great 
Salt Lake. In the U.S. National Museum are specimens from a warm spring 
at Fort Hall, and from the west side of Teton Basin. Both of these locali- 
