2 Journal New York Entomological Society. ^^'°^- ^^• 



is now possible to give the complete distribution of our species with 

 reasonable accuracy and to discuss the causes that have produced it. 

 Such is the subject I shall attempt to treat in this paper. 



Taxonomy. 

 Before taking up the distribution of our species let me briefly 

 sketch the classification and distribution of other Cicindelidae in order 

 to emphasize the small portion ours constitutes of the whole subfamily, 

 for the Cicindelid?e are now regarded as merely a subfamily of Cara- 

 bid.-e. The subfamily is divided into five tribes, viz. : Ctenostomini, 

 Collyrini, Mantichorini, Megacephalini, and Cicindelini, of which two, 

 Collyrini and Mantichorini, are confined to the old world and do not at 

 present concern us at all. A third tribe, the Ctenostomini, are confined 

 to tropical climates, some species occurring in Yucutan, but none has 

 so far come nearer to the southern limit of the United States. So that 

 our interest centers in the tribes Megacephalini and Cicindelini. The 

 former is represented by several South American genera, Encallia, 

 OxychUa, Chiloxia, Pseudoxychila and Aniaria, of which Mr. Harris 

 has been kind enough to bring specimens for your examination. These 

 genera extend for varying distances north of the isthmus of Panama, 

 one reaching Honduras, another Costa Rica, but none attaining as yet 

 the United States. The Megacephalini include also the species of 

 Omus, confined to the Pacific Slope; the species of Aniblychila, con- 

 fined to the Sonoran region; and the species of Tctracha which are 

 numerous, and covering nearly all the territory occupied by other 

 members of the tribe, extend also beyond that territory and are found 

 in the Antilles and in our southern states north to Cincinnati, Ohio, 

 fide Dury, and Central Park, Long Island, where, as you know, a 

 single specimen has been found by Mr. Davis. There remains to con- 

 sider the fifth tribe Cicindelini ; this, too, consists of several genera 

 besides Cicindela proper, of which the South American Enprosopus, 

 Oxygonia, Odontochila and Prcpusa are represented in the box pre- 

 pared by Mr. Harris of these genera. I know of no Central American 

 species except Odontochila of which Mr. Harris has received a 

 specimen taken in the state of Sonora, Mexico. Cicindela is therefore, 

 though an important genus with us, only One genus in a large tribe 

 and that tribe is only one of the five into which the subfamily is 

 divided. The importance it assumes in our lists is greater than that to 

 which it becomes entitled among the Cicindelidse of the world. 



