58 
MEMOIRS OF THE NATIONAL ACADEMY OF SCIENCES. 
one male one only of the front middle pair is wanting. In four females and one male from Bat Cave, Carter county, 
Kentucky, the front middle eyes are wanting. Mandibles long and spreading at the tips, inclined backward toward 
the maxillae, seven teeth in front of the claw groove, which are longer in the males. No palpal claws. Legs 1, 4, 
2, 3; longest 4.75 mm . Tarsal claws short and slender, under claw with one tooth, upper claws with seven or eight 
teeth. Spines on patella and tibia. Epigynum with a small oval opening behind, with dark brown border. Palpus 
of male (Fig. 17), having a sharply-curved process at the base of the tarsus. The penis is supported by a stout con¬ 
ductor nearly to its end, where it passes a soft brush-like appendage. 
Fountain Cave, Virginia, among stalactites, in company with Neslicus pallidus (Packard); also in Bat Cave, 
Carter county, Kentucky (Shaler and Packard). 
Anthrobia mammouthia (PI. XV, figs. 1 to 6).—In 1844, Tellkampf described and figured roughly in Wiegmann’s 
Archiv fur Naturgeschichte several Arthropods from the Mammoth Cave; among them an eyeless spider which 
he referred with doubt to the Mygalidse, apparently because he saw only four spinnerets. The eyeless spiders, 
found by Dr. Packard in the Mammoth Cave in 1874 agree generally with Tellkampf’s description, and his Fig. 13 
represents quite well the outline of a specimen flattened by pressure between two glasses. No other eyeless spider 
was found, and no other which could be identified with Tellkampf s description. There seems, therefore, little doubt 
that these are spiders of the same species as those described by Tellkampf. Adults, 1.5 mm long, pale brownish-yellow ; 
abdomen almost white, with brown hairs; ends of palpi, palpal organs, and epigynum reddish brown. Cephalothorax 
with scattered hairs in front. No eyes. Mandibles with four long teeth in front of the claw groove. Maxillae short 
and wide. Sternum wide and hairy. Legs 1, 4, 2, 3; longest about 2.5 mm , hairy, with spines on patella and tibia. 
Under tarsal claw with one tooth, the upper claws with six or more short teeth. No palpal claw. Palpus of male 
(Fig. 3) with a long process on the outside of the tibia, ending in a sharp hook. The tarsal process forms a small thin 
hook. Palpal organ very simple; the penis very short, and accompanied by a soft, thin appendage. Spinnerets short; 
hypopygium one-third the length of the first pair. 
Mam moth Cave and Proctor’s and Diamond caves, under stones (Sanborn and Packard). Small flat cocoons 
were found with some specimens, containing small numbers of eggs, which were unusually large in proportion to the 
size of the spider. 
[In this connection it may be of interest to learn the opinion of Dr. T. Thorell, the accomplished arachnologist 
of Upsala. Upon receiving a specimen of Anthrobia mammouthia which I sent him he writes me that “ the Anthro¬ 
bia, if it really is the true A. mammouthia Tellkampf, scarcely differs from the genus Erigone by anything more than 
the want of eyes; it may, however, be added as a peculiarity, that the three long and slender tarsal claws are quite . 
smooth, neither dentated nor pectinated. The species belong most certainly to the family Theridioidse.” 
On the other hand, on the receipt of a specimen of the same species of spider and from the same cave (Mam¬ 
moth) as that from which the specimen was taken which was sent Dr. Thorell, M. Simon, of Paris, writes me that 
“the Anthrobia is not allied to Mygalid®, as was supposed from the imperfect description of Tellkampf, but to our 
Dysderid®, and the genus Leptoneta, only it is blind.”—A. S. P.] * 
The following additional species have also been described by Count Keyserliug, as I am 
informed by Dr. G. Marx: Willibaldia cavernicola Keys (closely allied to Linyphia incerta Emer.): 
Phanetta subterranea Keys ( =Linyphia subterranea Emer.); Erigone infernalis Keys. The descrip¬ 
tions of the two last species appeared in Die Spinnen Amerika’s Theridiidte. 2te hailfte, 1886, pp. 
125 and 180. Liocranoides unicolor Keys, from Mammoth Cave, should also be added. * 
MYRIOPODA. 
In order to facilitate the identification of the cave Myriopods, all of which, except Cambala 
annulata, belong to the Lysiopetalidae, I give the descriptions of the genera and species from my 
“Revision of the Lysiopetalidae” in the Proceedings of the American Philosophical Societv xxi 
177, September 15, 1883. “ ’ 
Lysiopetalum Brandt. 
Julu8 Say, Journ. Acad. Nat. Sci., Phil., ii, part i, 104, 1821. 
Lysiopetalum Brandt, Recueil, 42, 1840. 
Spirostrephon Brandt, Bull. Sci. Acad., 1841; St. Petersb., 1840. Recueil, p.90, 1840. 
Platops Newport, Ann. and Mag. Nat. Hist., xiii, 266, 1844. 
Lysiopetalum Gervais (in part), Apthres, iv, 133, 1847. 
Cambala Gervais, Apteres, iv, 134, 1847. Exped. a l’Amer. du Sud (Castelneau), Myriop., 17. 
Reasia Sager, Proc. Acad. Nat. Sci. Phil., 109, 1856. 
Spirostrephon Wood, Myriop. N. Amer., Trans. Amer. Phil. Soc., 192, 1865. 
Spirostrephon Cope, Proc. Amer. Phil. Soc., 179, 1869. 
Spirostrephon Ryder, Proc. U. S. Nat. Mus., iii, 526, 1881. 
Not Cambala Gray, Griffiths, Cuvier An. King. Ins., PI. 135, fig. a, 1832. 
Not Reasia Gray. 
Not Reasia Jones, Todd’s Cyc. Anat. Art. Myriop., 546. 
Body segments numbering as many as upwards of sixty, with as many as one hundred and fifteen pairs of 
legs; the body unusually long and slender, tapering gradually towards the subacute tip. Head with the front flat 
high, and narrow, more so than usual; the eyes in a rectangular triangle, composed of as many as forty to forty-one 
