GEOGRAPHICAL DISTRIBUTION. 173 
52. GuATEMALA. — A species of Cambarus was obtained by Mr. Salvin near Coban, in the 
Province of Alta Vera Paz, at an elevation of about 4,300 feet above the sea. 
(See Huxley, Proc. Zodlog. Soc. London, 1878, p.. 763; The Crayfish, p. 312, 
fig. 78; also page 7 of this work.) This is the most southern locality from 
which the genus Cambarus has been obtained. 
53. Cupa.— One species, C. Cubensis. The examples in the Museum of Comparative 
Zodlogy were obtained near Havana. According to Von Martens there are 
indications of a second species of Cambarus native to Cuba. (See page 53.) 
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 Rivers are inhabited by only a single 
species, C. Barton. 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 Blackstone River basin. 
In the Hudson River 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. Blandingti, Bartonii, Diogenes, and 
affinis. 
In the area drained by the rivers that empty into Chesapeake Bay, the chief of which 
are the Susquehanna, Potomac, Rappahannock, and James, are found C. Blandingii, 
C. Bartonit, C. Burtonii, var. robusta, C. Diogenes, Uhleri, and affinis. C. Uhleri 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 (Roanoke, Tar, Neuse, Cape Fear, and tributary streams) 
are inhabited by C. Blandingii, Bartonit, and Diogenes. 
The Santee River and the minor streams of South Carolina yield C. Blandingii, 
C. Blandingii, var. acuta, C. troglodytes, Carolinus, acuminatus, latimanus, spinosus, and 
Burtonii, 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, 
Altamaha, ete.) furnish C. Blandingii, pubescens, troglodytes, Leconte, spiculifer, penicillatus, 
and datimanus. In the lower part of the State are also found C. advena, angustatus, and 
maniculatus. 
In the St. John’s River, Florida, have been found ©. fallar, Clarkii, and Alleni. 
C. fallax and C. Alleni have not been found outside of the State of Florida. 
In the upper portion of the Chattahoochee River live C. spiculifer and C. latimanus. 
In the upper part of the course of the Alabama River (Etowah, Oostenaula, and Coosa 
Rivers), C. extraneus, Jordani, and spinosus have been secured; in the upper part of the 
Tombighee, C. Blandingii, var. acuta, C. latimanus, Hayi, and Mississippiensis. At 
Mobile, where the Alabama and Tombigbee, after uniting, empty into Mobile Bay, 
C. Blandingti, var. acuta, C. Clarkii, Lecontei, and versutus oceur. 
Mississippi River System. — From the portion of the Mississippi Valley south of the 
