I9 o 5 ] 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. blandingi (Harl.). 



New Localities. — ■ Millpond at Plainsboro, Middlesex Co., New 

 Jersey, coll. by the writer (Cam. 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 Aquaeduct near P/inceton, Mercer Co., N. 

 J. (seen by the writer). 



C. clarki Gir. 



New locality. — Devils River, Val Verde Co., Texas, coll. by 

 H. A. Pilsbry, 1903 (specimens in Philadelphia Acad, and Cam. 

 Mus.). 



C. timosus (Raf. ). 



New localities. — Stony Brook, Princeton, Mercer Co., N. J., 

 coll. by the writer, May 30 and Sept., 1898 (Cam. Mus.). — 

 Delaware-Raritan Canal, at Aquaeduct near Princeton, Mercer Co., 

 N. J., coll. by the writer, Jan., 1899 (Cam. Mus.). — Delaware 

 River, North Cramer Hill, Camden Co., N. J., coll. by the writer, 

 Sept. 18, 1904 (Cam. 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. (Cam. 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 Cam. 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 (Cam. 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 



