82 ■ MEMOIES OF THE NATIONAL ACADEMY OF SCIENCES. 



IV— SYSTEMATIC LIST OF THE CAVE ANIMALS OF THE UNITED STATES. 



Class INFUSORIA. 



Vibrio sp. 



Chilomonas emarginata Ehr. in Tellkf., New York Journ. Med., 86, July, 1845. Mammoth Care. 



Chilodon cucallus Ehr. ? Mammoth Cave. 



Monas, resembling M. kolpoda. Mammoth Cave. 



Monas sp. Mammoth Cave. 



Colpoda ? . Mammoth Cave. 



Nassula ? or Prorodon ? . Mammoth Cave. 



Bodo ? . 



Synedra ulva Ehr. 



Branch VERMES. 



Vortex 1 cavicolens Pack., Amer. Naturalist, Jan., 1883. Carter caves. 



Dendrocmlum per ccecum Pack., Zoology, 142, 1879. Mammoth Cave. 



A Nematoid worm parasitic in rectum of larva of Adelops hirtus Hubbard, Amer. Eut., iii, 1880. 



Lumbricus sp. Mammoth Cave. Hubbard, Amer. Ent., iii, 1880. 



Class CRUSTACEA. 



Cauloxenus stygius Cope. From blind-fish taken from a well near Wyandotte Cave. 



Canthocamptus cavemarum Pack., Zoology, 297, 1879. Mammoth Cave. 



Ccecidotwa stygia Pack., Amer. Naturalist, 752, v, 1871. Mammoth and Wyandotte caves. 



Cacidotcea niclcajaclcensis Pack. Nickajack Cave, Tennessee. 



Crangonyx vitreus (Cope), Amer. Naturalist. Mammoth Cave. 



Crangonyx packardii Smith. Wells in Orleans and New AlbaDy, Indiana. 



Crangonyx amennatus Pack., Amer. Naturalist, xv, 880, 1881. Nickajack Cave, Tennessee. 



Crangonyx mucronatus Forbes, Bull. 111. Mus. Nat. Hist., i, 6, 1876. Wells in Normal, Illinois. 



Cambarus lucifugus Hay, Amer. Naturalist, xvi, 144. Well in Illinois. 



Cambarus pellucidus (Tellkf.). Mammoth, Wyandotte caves, etc. 



Cambarus hamulatus (Cope). Nickajack Cave. 



Class ARACHNIDA. 

 Order Acarina. 



Bhyncholophus cavemarum Pack. White's Cave and Long Cave. 



Bryiobia ? or Pentlialceus ? iveyerensis Pack. Weyer's Cave. Mr. Michaels writes that this probably belongs 



to the genus Labidostoma (Kramer) or Nicoletia of Canestrini. 

 Loslaps (or Holostaspis ?) wyandottensis Pack. Wyandotte Cave. 

 Leelaps (=Iphis f) cavemicola Pack. Mammoth Cave. 

 Gamasus (or Hypoaspis ? ) troglodytes Pack. Mammoth Cave. 

 Gamasus stygius Pack. Bat Cave, Carter Caves, Kentucky. 

 Damwus (=Delba) bulbipedatus Pack. (Probably from Mammoth Cave. The form represented by Fig. 8, PI. 



X, Mr. A. D. Michaels* thinks is "probably genus Notaspis.") 

 Uropoda lucifugus Pack. New Wyandotte Cave. 

 Oribata alata Pack. Dixon's Cave. 

 Sejus ? sanborni Pack. Cave near Dismal Creek, Kentucky. 



* While this paper was going through the press I sent proofs of the figures to Dr. Trouessart and also to Mr. A. 

 D. Michaels, hoping to hear from one or the other before going to press, asking information concerning the genera of 

 these mites, of which I have no special knowledge. Both kindly and promptly replied, but it is to be understood 

 that they saw only rather indifferent figures, and that their determinations are largely conjectural, as in some cases 

 my figures did not show either generic or specific characters. But the information was gladly received, for when 

 some one takes up the study of our mites and collects in our caverns, he will undoubtedly be able to find the forms 

 here referred to and to correctly place them in their proper genera. Meanwhile the information here given is better 

 than none at all. At the same time due allowance must be given to the fact that the two naturalists above named 

 who have kindly aided me have based their suggestions or determinations on my sketches alone, not having either 

 drawings made by an expert or the specimens themselves. 



