52 



NEW YORK STATE MUSEUM 



Species not contained in the preliminary list, which have since 

 been reported as occurring in New York. 



cornutus (Unio) Barnes. (1) 

 cylindricus (Unio) Say. (1) 

 Decora f Anodonta) Lea. (2) 

 Liebii (Unio) Lea. (3) 

 ovata(Anodonta) Lea. (4) 



Pepiniana (Anodonta > Lea. (5) 

 Salmonia (Anodonta) Lea. (6) 

 securis (Unio) Lea. (1) 

 tenuissimus (Unio) Lea. (7) 

 Tryonii (Anodonta) Lea. (6) 



In the United States there are five drainage systems as 

 follows : 



1. The Eastern drainage system. — This system includes all 

 streams flowing into the Atlantic Ocean east of the Appalachian 

 Mountains, from Maine to Alabama. 



2. The St. Lawrence or Northeastern drainage system. — This 

 system extends along the northern boundary of the United 

 States from Minnesota eastward, and includes the Great Lakes 

 and all other lakes and streams which find an outlet through the 

 St. Lawrence river. 



3. The Mississippi or Central drainage system. — This system 

 includes the region lying between the Appalachian mountains 

 and the Rocky mountains, and is drained by the Mississippi river 

 and its tributaries and other streams which empty into the Gulf 

 of Mexico. 



4. The Northern drainage system — This system includes a 

 limited area in northern Minnesota and North Dakota, drained 

 by the Red river of the North. 



5. The Pacific or Western drainage system. — This system 

 includes all streams emptying into the Pacific ocean, and drains 

 the region lying west of the Rocky mountains. 



Three of these drainage systems are represented in New York, 

 viz.: The Eastern system, including the Housatonic, Hudson, Del- 

 aware and Susquehanna rivers and their tributaries. 



Cl) Allegheny river, Warren, Pa. C. E. Bee her. 



(^) Lea collection. Mohawk, N. Y., Dr. Lea. Rochester, N. Y.. Dr. Dewey Simpson in 

 letter. 



(3) " Probably a variety of circulus. All specimens I know of are reported from Lake Erie 

 without locality, with tbe exception of Lea's type which is from Michigan. " Simpson in letter. 



"Dr. Newcomb insisted that a curious shell from Onondaga lake, which I gave him was U. 

 Liebii, and so labeled it in the Cornell University cabinet. I thought it erroneous as it doubt 

 less is, but I had not then seen U. Liebii. It seems an abnormal U. radiatus orluteolus." 

 Rev. W. M. Beauchamp 



(4) "Lea collection, Buffalo, N. Y., Dr. Robinson, Canal, Rochester, N. Y., Dr. Dewey." 

 Simpson in letter. 



(5) "Lea collection. Skaneateles, N. Y., collected by Isaac Lea." Simpson in letter. "Dr. 

 Newcomb called a small and fragile shell from Skaneateles and Cayuga lakes by this name, 

 but I think it mere than doubtful." Rev. W. M. Beauchamp 



(6) " It is likely that tbese two species occur in southern New York. I have shells of both 

 species with New York localities given, but can not vouch for their being correct." Wm. A. 

 Marsh. " Raritan river, Somerville, N. J. 11 Thomas Morgan. 



(7) "Buffalo, N. Y. Lea collection. Collected by C. F. Robinson." Simpson in letter. 



