100 ASTACID^. 



10. Pennsylvania. — Three species: C. affinis, C. obscurus (?), C. 

 Bartonii. 



The first and the third species are known from the Delaware River 

 (Philadelphia) and from the Schuylkill River (Carlisle, Reading), from 

 the Susquehanna and its affluents (Hummelstown, Berwick), and from 

 the Ohio (Pittsburg). C. obscurus (if it be the A. fossor Raf.) is from 

 Philadelphia. 



In the great State of Pennsylvania, which consists of sixty-five coun- 

 ties, we are acquainted with only a few single localities in six counties. 

 Of these, one is on the eastern border, another on the western, while 

 the four others lie near together in the middle of the State. 



11. Maktland. — One species : C. affinis. 



Only one locality, Havre de Grace, at the mouth of the Susquehanna, 

 is known. 



12. Vieginia. — Five species : C acidus, C. Bartonii, C. robnstus, C 

 obesus, and C. obscurus (if it is the A. fossor Raf). 



Out of one hundred and sixty-five counties our knowledge extends 

 to only four, — the James River and its affluents, at Petersburg, the 

 Rappahannock (Fredericksburg), and Greenbrier River in the western 

 part. 



13. District of Columbia. — One species : C. Bartonii, at George- 

 town. 



14. North Carolina. — Three species : C. acidus var. B., C. Lecontci, 

 C immunis ; all from Beaufort, on the southeastern border. 



15. South Carolina. — Seven species: C. acidus, C. troglodytes, C. 

 Blandingii, C. penicillatus, C. latimanus, C. advena, C. Carolinus. 



C Blandingii is from the northern border, Wateree River; all the 

 others are from Charleston and Summerville, on the southern border. 



16. Georgia. — Ten species : C. troglodgtes, C. Lecontci, C. spiculifer, 

 C. angustatus, C. maniadatus, C. penicillatus, C. extraneus, C latimanus, C. 

 advena, C. Carolinus. 



Georgia, thanks to the monograph of Mr. John LeConte, is as yet still 

 the best explored State. He describes nine species; one, C.fossarum, is 

 perhaps identical with C. troglodgtes. A. Blandingii I have not been able 

 to determine with certainty. Two other species have been seen by 

 him, making in all ten species, exactly the number I have marked. It 

 is a pity that he never gives the exact localities. C. spiculifer, C. lati- 

 manus are noticed as living " in Georgia superiore " ; C. troglodgtes, C. 

 fossarum, C. maniculatus, C. angustatus, C. advena, " in Georgia inferiore " ; 

 C. Blandingii, " in regionibus intermediis." 



Our knowledge of localities enables us to credit C. spiculifer and C. 

 latimanus to Athens, C. Lccontei to Milledgeville, and C. spiculifer to Ros- 

 well ; also to two points in the northern parts and to one in the middle 

 of the State. C. extraneus is cited from the Tennessee River, Georgia, 

 but this river does not touch the limits of Georgia. 



