GEOGRAPHICAL DISTRIBUTION. 173 



52. ("ir.VTKMAiA. A species of ( ';tml>;mis \v;is obtained liy Mr. Salvin near Coban, in the 



Province of Alia Vera Tax, at an elevation of about 4,">00 feet above the sea. 

 (See Huxley, Proc. Zoblog. Soc. London, 1878, p. 7G3 ; The Crayfish, p. ",12, 

 iig. 78 ; also page 7 of this work.) This is the most southern locality from 

 which the genus Cambarus has been obtained. 



53. CUBA. One species, C. Culensis. The examples in the Museum of Comparative 



/oniony were obtained near Havana. According to Von Martens there are 



O*/ 



indications of a second species of Cauibarus native to Cuba. (See page Go.) 



Distribution of the North American Species of Cambarus and Astacus 

 according to the River Systems. 



Viewing the distribution of the various species according to the river systems, it ap- 

 pears that the St. John, Penobscot, and Kennebec Eivers are inhabited by only a single 

 species, C. Bartonii. In the remaining large rivers of New England, the Androscoggin, 

 the Saco, the Merrimac, and the Connecticut, crayfishes are unknown. C. Bartonii has 

 been found in springs at Grafton, Mass., in the Blackstoue Eiver basin. 



In the Hudson Eiver basin C. Bartonii is widely distributed. Near the mouth of 

 this river, in Essex Co., New Jersey, C. Blandingii occurs. This is probably its northern 

 limit in the east. 



From the Delaware and its tributaries come C. Blandingii, Bartonii, Diogenes, and 

 ((ffin is. 



In the area drained by the rivers that empty into Chesapeake Bay, the chief of which 

 are the Susquehanna, Potomac, Eappahannock, and James, are found C. Blandimjii, 

 C. Bartoitii, C. Bartonii, var. robusta, C. Diogenes, Uhlcri, and affinis. C. Uhlcri is known 

 only in the low region on the Chesapeake and Atlantic coasts of Maryland, often in 

 brackish and salt water. 



The rivers of North Carolina (Eoanoke, Tar, Neuse, Cape Fear, and tributary streams) 

 are inhabited by C. Blandingii, Bartonii, and Diogenes. 



The San tee Eiver and the minor streams of South Carolina yield C. Blandingii, 

 C. Blandingii, var. acuta, C. troglodytes, Carolinus, acuminatus, latimanus, spinosus, and 

 Burton it, the last species in the head- waters of the Santee among the mountains of 

 Western North Carolina. 



The rivers which flow into the Atlantic Ocean in the State of Georgia (Savannah, 

 Altarnaha, etc.) furnish C. Blandingii, pubescens, troglodytes, Lecontei, spiculifer, penicillatux, 

 and latimanus. In the lower part of the State are also found C. advcna, angustatus, and 

 maniculatus. 



In the St. John's Eiver, Florida, have been found C. fallaic, Clarkii, and Allcni. 

 C. fallax and 0. Alleni have not been found outside of the State of Florida. 



In the upper portion of the Chattahoochee Eiver live C. spiculifer and C. latimamix. 



In the upper part of the course of the Alabama Eiver (Etowah, Oostenaula. and Coosa 

 Eivers), C. c.i-tranexg, Jordani, and spinosus have been secured; in the upper part of the 

 Tombigbee, C. Blandingii, var. acuta, C. hitiiiimui.s, Haiji, and Mis&issippicnsis. At 

 Mobile, where the Alabama and Tombigbee, after uniting, empty into Mobile Bay, 

 C. Blandingii, var. acuta, C. Clarkii, Lccuntci, and rcrsutus occur. 



// River System. From the portion of the Mississippi Valley south of the 



