MEMOIRS OP THE NATIONAL ACADEMY OF SCIENCES. 11 



DIXON'S CAVE. 



This is supposed to be the former outlet of Mammoth. Cave. It is a chasm 50 feet wide, and 

 by a fall of the entrance to a sink-hole it became cut off from Mammoth Cave. The entrance to 

 the cave is half a mile distant from that of Mammoth Cave. In this cave Mr. Sanborn found two 

 species of mites, and I detected species of other groups. The end is wet, with dripping walls. 



FAUNA* OF DIXON'S CAVE. 



Acari, 2 sp. (Sauboni). 



Oribates longisetosa Pack. End of the cave. 



Ch'honius packardi Hag. 



Isotoma ?. (Lead-colored.) 



Smynthurus sp. (Sanborn.) 



Hadenoccus subterraneus Scudd. 



Ceuthophilus stygius Scudder. Near the month in twilight. 



Adelops hirtus Tellkf. 



TEMPORARY RESIDENTS AT OR NEAR THE MOUTH. 



Helix sp. With eyes normal. 



Mela menardi. Also found in shady places in Massachusetts and New Hampshire. 

 Epvira cavaUca Keys. From caves in Kentucky (Keys iii, 4) ; which cave is not stated. 

 Batrisus spretus Lee. Of a reddish color. Two females occurred at the end of the cave. 

 Qucdius fulgidus. (Fabr.) 



WHITE'S CAVE. 



This cave is 500 yards in length, is wet, dripping in many parts, and is said to be a section of 

 Mammoth Cave. '^The exact point of communication is supposed to be with the extremity of 

 Little Bat Avenue and Mammoth Dome, though no one has as yet made his way through.' 7 (Hovey )• 

 Within the mouth of the cave, 10 feet from the actual entrance, I found four species of Podurids, 

 a common Tettigonia, and two kinds of flies, as well as Ceuthophilus stygius, Lumbricus, and Spelerpes 

 of a deep flesh color. These are evidently temporary residents near the entrance and living in 

 partial daylight. 



FAUNA OF WHITE'S CAVE. 



Cwcidoteea stygia Pack. In pools. 

 Acarus. ? sp. 



Phalangodes armata Tellkf. 

 Anophthalmia tellkampfii Erich. 

 Co.mpodea cookei Pack. 

 Hadenoccus subterraneus Scndd. 

 Ceuthophilus stygius Scndd. 



SALT CAVE. 



This is a large cave, the entrance of which is situated about 2 miles northeast of that of Mam- 

 moth Cave. We found it rather difficult to enter on account of the blocks of stone which have 

 fallen from the roof at the mouth. It was in this cave that on May 1, 1874, Mr. Sanborn found the 

 pupa, while I was fortunate enough to find the larva of Anophthalmus, and the freshly-evolved 

 beetles. About 100 feet from the mouth, in partial daylight, occurred the cave-cricket (Radenoecus 

 subterraneus) and Anophthalmia tellkampfii as well as Campodea cookei. 



On the same day Mr. Sanborn and myself explored a short cave about 80 feet in extent and 

 situated near Ice Cave. It is partially lighted by day, and the animals in it constitute a twilight 

 fauna; these were Hadencecus subterraneus, which is a twilight as well as true cave species; the only 

 other animals found was a Phalangium and a Tipulid fly. About 50 feet within the cave from the 

 mouth I found a snail {Helix sp.) with eyes; all these three forms were migrants from out-of-doors. 



PEOCTOR'S CAVE. 



This cave was visited in company with Professor Shaler and Messrs. Proctor and Sanborn. It 

 is 3 miles from Mammoth Cave ; 3 miles of avenues are open to the public. We did not find so rich 

 and interesting a fauna as in Diamond Cave. It is a wet cave. The following species occurred: 

 Anthrobia mammouthia, Anophthalmus tellkampfii, A. menetriesii. 



