COLEOPTERA— STAPHYLINID^. 29 



a larger development than usual, and the insects are as skillful in running as if they 

 possessed eyes. Anopthalmns is closely related to our British genus Trechus, the 

 species of which are very much given to living in deep crevices in the earth, or under 

 large stones, and have some of them very small eyes. In addition to the cavernicolous 

 Anopthabnus, other blind Carabidaj have been discovered during recent years in various 

 parts of the world, where they live under great stones deeply embedded in the earth; 

 these blind lapidicolous Carabidce are of extremely minute size and most sluggish 

 habits; the situations in which they are found suggest that many successive genera- 

 tions are probably passed under the same stone. Not a single specimen has ever been 

 found above ground. The minute Carabids of the genus Aepiis, that pass a large 

 part of their lives under stones below high-water mark (emerging only when the tide 

 uncovers them), on the borders of the English Channel and elsewhere, are very closely 

 allied to these blind insects, and have themselves only very small eyes, which however, 

 according to Hammond and Miall, are covered in larger part by a peculiar shield. 



Family SILPHIDAE. 

 Choleva sp. 



A single female, probably accidental, was found under a stone at 

 " 37," at a piece of beef used to attract insects. Blatchley (1896, 131) 

 found a beetle apparently belonging to this family in Coon's Cave. 

 Carman (1894, 81) records Choleva alsiosa Horn from a cave near Lex- 

 ington, Kentucky, and Packard (1894, 732) mentions Choleva spelsea 

 Bilimek (1867, 902) from Cacahuamilpa Grotto in Mexico. 



The genus Choleva is closely related to the genus Adelops. Adelops 

 hirtus is an abundant species in Mammoth and other Kentucky caves, 

 while there are, according to Packard (1888, 89), 59 species oi Adelops 

 in European Caves. The genus has been discarded in Europe, however, 

 and the species of Adelops placed principally in the genus Bathyscia, a 

 genus of typically cave forms, eyeless and wingless. Catops is another 

 genus closely related to this genus. The species of Catops live in fungi, 

 carrion, or ants' nests. Cope (1872, 166) found a species of Catops 

 near the mouth of Wyandotte Cave. C. speluncarum (Hamann, 1896) 

 is found in caves in Sardinia. 



Family STAPHYLINIDAE. 

 Rheochara luclfuga Casey. 



Rheochara btcifnga Casey, Ann. N. Y. Acad. Sci., vii, 1893, 228 (caves near Lex- 

 ington, Kentucky). 



Calodera cavicola Garman, Psyche, vii, 1894, 81, fig. 1 (caves near Lexington, 

 Kentucky). 



Rheochara lucifuga, WiCKHAM & Blatchley, Rep. Ind. Geol. Surv., xxi, 1896, 

 195 (Truett's Cave). 



This is by far the most abundant beetle found in the cave. It con- 

 gregates in abundance at the bait left to attract insects, a piece of meat 

 or cheese seldom failing to attract at least one or two, and on one occa- 



