MEMOIRS OF THE RATIONAL ACADEMY OF SCIENCES. 
11 
DIXON’S CAYE. 
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 cat 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. (Sanborn). 
Oribates longisetosa Pack. End of the cave. 
Chthonius paclcardi Hag. 
Isotoma ?. (Lead-colored.) 
Smynthurus sp. (Sanborn.) 
Hadencecws subterraneus Scndd. 
CeuthopMlus stygius Scudder. Near the month in twilight. 
Adelops hirtus Tellkf. 
TEMPORARY RESIDENTS AT OR NEAR THE MOUTH. 
Helix sp. With eyes normal. 
Meta menardi. Also found in shady places in Massachusetts and New Hampshire. 
J'peira cavatica 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. 
Quedius fulgidus. (Fabr.) 
WHITE’S CAYE. 
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 JBat Avenue and Mammoth Dome, though no one has as yet made his way through.” (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 CeuthopMlus 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. 
Coeeidotcea stygia Pack. In pools. 
Acarus. ? sp. 
Pkalangodes armata Tellkf. 
Anophthalmus telUcampfii Erich. 
Campodea coolcei Pack. 
Hadenceeus subterraneus Scudd. 
Ceuthophilus stygius Scudd. 
SALT CAYE. 
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 ( Hadenceeus 
subterraneus) and Anophthalmus tellkampfii as well as Campodea coolcei. 
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 Hadenceeus 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. 
PROCTOR’S CAYE. 
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. 
