THE MAMMOTH CAVE. 137 



The body is yellow, striped with black. They 

 are provided with large eyes, but seem to direct 

 their course, mainly, by their antennse, or feelers, 

 which are enormously developed. They are 

 sluggish in their movements, and, unlike other 

 crickets, observe an eternal silence. 



The Cave lizards vary in length from three 

 to five inches. The eye is large and prominent. 

 The body is yellow and dotted with black spots, 

 and is semi-transparent. They are sluggish in 

 their movements. 



The abundance of animal life at this point 

 (Crogan's Hall) would seem to indicate that 

 there is a communication with the surface of 

 the earth at no great distance. 



Bats are found in all parts of the Cave, we are 

 told by Dr. Wright, but most abundantly in Au- 

 dubon's Avenue. 



Professor Silliman, a portion of whose remarks 

 have alrea;dy been quoted ("Silliman's Journal" 

 for May, 1851), says : 



" There are several insects, the largest of 

 which is a sort of cricket with enormously long 

 antennae. Of this insect, numerous specimens 

 will be found among the specimens sent to Profes- 

 sor Agassiz. There are several species of coleop- 

 tera, mostly burrowing in the nitre-earth. There 



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