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. 



Cambarits 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 BerUn Museum. It was 

 collected l)y 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' anime of Camharus duhius (see Hay, Proc. Biol. Soc. 



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. duhius, 

 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. duhius 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 I'ounded off and lacks the subserrate ridge characteristic of C duhius; in this 

 regard the hand of C. carolinus appears to be like that of C. monongalensis 

 Ortm. 



No. 14,314, U. S. 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. duhius in 1890 

 (Proc. U. S. Nat. Mus., 12, p. 624), I erred in ascribing it to the Indian Territory. 

 I am advised by Mr. Mooney that it was in reahty obtained in Swain Co. or 

 in Jackson Co., N. C, among the Eastern Cherokees, — a remnant of the Nation 

 which eluded deportation in 1838 and still clings to the old home in western North 



' Mr. W. P. Hay (Proc. Biol. Soc. Washington, 15, ]). 3S, 1902) has unfortunately given this local- 

 ity as uteslern North Carolina, and has been followed in this error by Mr. J. A. Harris (Kansas Univ. 

 Sei. Bull., 1903, 2, p. 81, 142, 154). 



