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the rock, was disturbed, and one of the insects was taken within 

 a foot of the reptile's head, just as the warning rattle was given. 

 One of these specimens I gave to Professor Hentz to be described, 

 and at the same time suggested the name that he adopted for it. 

 All the rest of my specimens were taken on the top of Blue Hill, 

 at an elevation of 710 feet above the level of the sea, and at the 

 following times, namely, August 15, 1827 ; August 5 to 15, 

 1831; August 10, 1833; September 2, 1836; July 26, 1838; 

 and lastly August 26, 1848, twenty-four years after the first dis- 

 covery of the species. Most of all the known specimens have 

 been captured and distributed by me. A few have been taken in 

 the same place, by some of my entomological friends ; but none 

 have been found elsewhere to my knowledge. 



Cicindela Hentzii is not plentiful, even in the places inhabited 

 by it. It resorts chietly to the large flat rocks, that rise but little 

 above the surface of the soil. These rocks are thinly encrusted 

 with lichens, intermingled with a few tufts of the long-leaved 

 Houstonia, and are edged with patches of the trailing Bear-berry, 

 and with low shrubs and scanty herbage. While resting, this 

 Cicindela is hardly to be perceived, so well does it harmonize in 

 hue with the lichen-covered rocks ; but when it rises on the wing, 

 it is betrayed by its motions, and by the red color of the abdomen 

 then exposed to view, and appearing as if tinged with a drop of 

 blood. Not unfrequently, on alighting, it begins apparently to 

 browse on the lichens. Probably it finds there some minute in- 

 sects, spiders, or acari, that serve for its food. 



The rarity and limited range of C. Hentzii have led to the sus- 

 picion that it might be a local variety of some other species, per- 

 haps of C. riifiventris. The latter, though stated by Dejean, on 

 the authority of Palisot de Beauvais, to be a native of St. Do- 

 mingo, is found in the Southern States. My specimens of the 

 rujiventris were taken in North Carolina. There is no other 

 known North American species that comes so near Cicindela 

 Hentzii as this. They agree nearly in size, in the color of the 

 abdomen, and in the number and arrangement of the white spots 

 on the wing-covers. So too, Cicindela repanda and duodecim- 

 guttata, which are now accounted distinct and genuine species, 

 closely resemble each other ; indeed, they are more alike than 

 C. Hentzii and rujiventris ; and they were regarded by Mr. Say, 



