MEMOIRS OF THE NATIONAL ACADEMY OF SCIENCES. 07 



Unfortunately no specimens were found in the large Wyandotte Cave, if it occurs there. It 

 does not appear to be an inhabitant of Mammoth Cave, though occurring in Diamond Cave. 



The antennae in this species are much longer than iu any American form known to us, and 

 are much longer than in any European species figured by Lubbock, though in this respect it 

 approaches nearest to D. annulata (Fabr.), which is a pale greenish-yellow species, with remark- 

 ably long antennae. 



Remarks. — The result of the examination of specimens from different caves shows that this 

 species varies most perceptibly in the length of the antennae, especially the fourth or terminal 

 joint, which is shortest iu the specimens inhabiting the smallest, shallowest cave (Bradford), and 

 longest in the deep, perfectly-dark New Wyandotte Cave. In caves like those of Carter county 

 and Diamond Cave the individuals are nearly alike, the antennae being a little longer than in the 

 Bradford Cave specimens. It should be noticed that, compared with our American out-of-door 

 species, the New Wyandotte examples have remarkably long antennae. 



Smynthurus ferrugineus n. sp. Plate XVI, figs. 4, 4a, 46, 4c. 



Ferruginous, mottled with bright orange-red; eyes distinct reddish, or deep brick-red; abdo- 

 men globular; antennae moderately long and slender, ten to twelve jointed, with verticils of 

 hairs; the spring rather large; the terminal joint acute, serrulate beneath, except at the end, 

 which is obliquely truncated; the tarsus is perhaps rather slender; the claws only moderately 

 stout. Length, LI"" 11 . Common in New Market and Weyer's caves, Virginia. The young when 

 0.8 mm long are white all over and with no traces of eyes. The antennae are slenderer than in 8. 

 rosea Pack., and the claws are slenderer than in an undescribed Smynthurus from Massachusetts. 

 It is doubtful whether this should be regarded as a true cave species any more than Tomoceras 

 plumbeus, or Lepidocyrtus atropurpureus. Another white species occurs in Mammoth Cave. 



Campodea cooket Pack. Plate XVII, figs. 1, la to li. 



Campodea eoolcei Pack., Amer. Naturalist, v, 747, December, 1871; Fifth Ann. Rep. Peab. Acad. Sci., Salem, 46, 1873. 



Closely allied to C. staplii/iimis Westw. (common to Europe and America), but it is much 

 larger; the antennae are twenty-four instead of twenty-jointed, as in the other species, and are 

 longer in proportion, reaching to the basal abdominal segment, while in C. stapliylinus they reach 

 only to the second thoracic ; the terminal joints are much longer than in that species, the penulti- 

 mate joint being one-third longer. The terminal joint (PI. XVII, fig. le), as may be seen by com- 

 parison with that of the out-of-door species (Fig. 2), is very much slenderer, while the olfactory (?) 

 area (ol.) at the extreme eud is somewhat larger. Terminal abdominal segment longer and slen- 

 derer; hind femora longer than in C. stapliylinus. Caudal stylets (cercopoda) about twelve-jointed, 

 very long and slender (Fig. 1/). Entirely white, body somewhat pilose, some of the setae spiuulose 

 (Fig. 1 i). Length, .25 inch without the antennae and cercopods. Frequent in Mammoth, White's, 

 Salt, Diamond, Wyandotte (Packard), Indian Cave (Hubbard). 



Machilis cavernicola (Tellkampf). 



Tritira cavtrniojla Tellkampf, Archiv fur Naturgeschichte, x, 321. 



Machilis cavernicola Pack., Amer. Naturalist, v, 747, 1871; Fifth Rep. Peab. Acad. Sci., Salem, 51, 1873. 



This species is described as being white. It is rare, and my single specimen seemed immature 

 and was mislaid. Mammoth Cave. A Machilis also occurred in Wyandotte Cave. 



OETHOPTEEA. 



Hadencecus subterraneus Scudd. 



Baphidophora sublerranea Scudder, Proc. Bost. Soc. Nat. Hist., viii, 8, 1861. . 

 ■ Sadenacus subterraneus Scudder, Bo&t. Journ. Nat. Hist., vii, 440, 1862. 

 The following description is copied from that by Mr. Scudder: 



Fuscous.* under surface of body, the head except vertex, both pair of palpi except extremi- 

 ties, coxa-, under side of femora, terminal third of tibiae, and the tarsi except the under edge 



* The colors of both species arc described froiu specimens dried after a long immersion in alcohol. (S. H. S.) 



