396 CRAYFISHES. 
Mr. C. F. Baker has sent me a fine lot of C. latimanus from Auburn, Ala., 
among them specimens that have attained a length of four inches. 
CAMBARUS CAROLINUS Erichson. 
This species was described in 1846 (Arch. Naturgesch., 12, 1, p. 96). Erich- 
son’s type, a male of the first form, is preserved in the Berlin Museum. It was 
collected by Dr. Cabanis, who assured Dr. Hagen that all the crayfishes that he 
collected in the United States came from a rivulet in a plantation called Tiger 
Hall, near Greenville, S.C... In 1902 Mr. W. P. Hay procured from Dr. Johann 
Thiele of Berlin a photograph of the type specimen together with drawings of 
the right claw and first and second abdominal appendages. By means of this 
photograph and the drawings Mr. Hay identified the species with the crayfish 
which I described in 1884, from Cranberry Summit (now Terra Alta), Preston 
Co., W. Va., under the anme of Cambarus dubius (see Hay, Proc. Biol. Soe. 
Washington, 15, March 5, 1902, p. 38. 
By the courtesy of Mr. Hay I have before me Dr. Thiele’s photograph and 
drawings of Erichson’s type, and find that, although it nearly resembles C. dubius, 
yet it presents some different characters. The carpus is armed on its inner 
margin with two prominent, acute spines; of these the larger, anterior one is 
the so-called internal median carpal spine; on the left cheliped the photograph 
reveals a tubercle just behind, and at a lower level than, the median spine. 
In C. dubius there is but one carpal spine, the internal median. Furthermore, 
the outer margin of the hand of C. carolinus, as shown in Dr. Thiele’s drawing, 
is rounded off and lacks the subserrate ridge characteristic of C. dubius; in this 
regard the hand of C. carolinus appears to be like that of C. monongalensis 
Ortm. 
No. 14,314, U. 5S. N. M., male, form I., ‘“‘among the Cherokees, James 
Mooney,” agrees closely with the pictures of Erichson’s type, and may be con- 
sidered a typical C. carolinus. In a notice of this specimen as C. dubius in 1890 
(Proce. U.S. Nat. Mus., 12, p. 624), I erred in ascribing it to the Indian Territory. 
Iam advised by Mr. Mooney that it was in reality obtained in Swain Co. or 
in Jackson Co., N. C., among the Hastern Cherokees,— a remnant of the Nation 
which eluded deportation in 1838 and still clings to the old home in western North 
1Mr. W. P. Hay (Proe. Biol. Soc. Washington, 15, p. 38, 1902) has unfortunately given this local- 
ity as western North Carolina, and has been followed in this error by Mr. J. A. Harris (Kansas Univ. 
Sci. Bull., 1903, 2, p. 81, 142, 154). 
