1905. | ORTMANN— AFFINITIES OF CAMBARUS. 131 
It is astonishing how easy records and museums specimens become 
mixed up, and a number of localities which are given bona fide by 
various authors are very questionable. In the following, I put 
together those records, that appear —at least to me — doubtful or 
in need of confirmation. At the same time, a number of new 
records is given which have been made use of in the above pages. 
C. blanding? (Harl.). 
New Localities. — Millpond at Plainsboro, Middlesex Co., New 
Jersey, coll. by the writer (Carn. Mus.).— This species is further 
abundant in the millpond of Grover’s Mills, Princeton Junction, 
Mercer Co., N. J. (seen by the writer), and is rare in the Dela- 
ware-Raritan Canal, at Aqueduct near Princeton, Mercer Co., N. 
J. (seen by the writer). 
C. clarkt Gir. 
New locality. —Devils River, Val Verde Co., Texas, coll. by 
H. A. Pilsbry, 1903 (specimens in Philadelphia Acad. and Carn. 
Mus. ). 
C. limosus (Raf.). 
New localities. —Stony Brook, Princeton, Mercer Co., N. J., 
coll. by the writer, May 30 and Sept., 1898 (Carn. Mus.). — 
Delaware-Raritan Canal, at Aqueduct near Princeton, Mercer Co., 
N. J., coll. by the writer, Jan., 1899 (Carn. Mus. ). — Delaware 
River, North Cramer Hill, Camden Co., N. J., coll. by the writer, 
Sept. 18, 1904 (Carn. Mus.). — Collected by the writer at the 
following new places in Eastern Pennsylvania in September, 1904: 
Delaware River, Torresdale Fish Hatchery, Torresdale, Philadel- 
phia Co.; Marcus Hook Creek, Marcus Hook, Delaware Co.; 
Little Neshaminy Creek, Grenoble, Bucks Co.; Delaware River, 
New Hope, Bucks Co.; Schuylkill River, West Manayunk, 
Montgomery Co. (Carn. Mus.). — Further: Tributary of Brandy- 
wine Creek, Chadds Ford Junction, Chester Co., Pa. (Acad. 
Philad.).— Delaware River at Holmesburg, Philadelphia Co., Pa. 
(Acad. Philad. and Carn. Mus.). — Gettysburg, Adams, Co., Pa., 
coll. by H. A. Pilsbry (Acad. Philad.).— Potomac River, 
Cherry Run, Morgan Co., W. Va., coll. by the writer, Sept. 23, 
1904 (Carn. Mus. ). 
Doubtful and spurious older records. — Hagen gives, in 1870, 
Niagara (L. Agassiz) ; Lake Erie; New York (Mr. Pike) ; and 
Pittsburg. Faxon (1885) drops New York and Pittsburg, but 
