Sept.-Dec, i9i8.] DaVIS : MISSISSIPPI CiCADAS. 141 



Type (in my collection) collected by W. S. Genung near Bay St. 

 George, Newfoundland, in July. Additional specimens in my collec- 

 tion were collected by Geo. P. Engelhart at the same place, also in 

 July. Typical C. longilahris was found by Mr. Genung at Bay of 

 Islands, but only the green form at Bay St. George. Mr. Engelhardt 

 tells me that both forms may be found at Channel Village. 



The Cicindelidae of Newfoundland as far as known include the 

 above described forms of longilahris and C. traiiqncbarica var. Itori- 

 conoisis, Stephensvillc, C. limbalis, Bay of Islands, C. duodccimgiit- 

 tata, Little Codroy, Nicholsville, Stephensvillc, C. scxgitttata ( Le- 

 conte, Trans. Am. Phil. Soc, XI, i860). The exact locality for the 

 last is unknown ; all the others come from the west coast where 

 Fernald (Rhodora, XIII, 191 1, p. 117) found Carolinian plants on 

 the sandy beaches and dunes. As far as we now know the localities 

 named above mark the most northern limit of the family on our 

 Atlantic coast. 



MISSISSIPPI CICADAS, WITH A KEY TO THE 



SPECIES OF THE SOUTHEASTERN UNITED 



STATES. 



By Wm. T. Davis, 



New Brighton, Staten Island, N. Y. 



For several years Professor R. W. Harned has kindly sent to me 

 for identification the cicadas collected by the students of the !Missis- 

 sippi Agricultural and Mechanical College. It has been a pleasure 

 to go over the specimens, and now that records for eighteen species 

 have accumulated, including a new one, it seems desirable to make 

 a list of those known to occur in the state. Mississippi is rich in 

 cicadas, and as far as the present records show, has even more spe- 

 cies than Florida. This is easily explained, for some of the western 

 species reach as far eastward as the valley of the Mississippi River. 

 The discovery of the green-colored Okanagana, described in this 

 paper, from the delta section of the state, has been a great surprise. 

 It suggests that other unknown forms may still exist and emerge 

 from time to time from their unseen feeding places beneath the sur- 



