54 
MEMOIRS OF THE NATIONAL ACADEMY OF SCIENCES. 
—-Phlegmacera* cavicolens Pack. Plate XIV. figs. 5, oa-5g. 
Phlegmacera cavicolens Pack., Amer. Naturalist, xviii, 203, Feb., 1884. 
Generic, characters.— Iu this genus the body is not spiny, and is slightly compressed, much 
less flattened than usual, no broader than high, and the tergal as well as ventral surface is unusually 
convex and rounded. The cephalic plate bearing the eyes is about half as long as broad; behind 
the cephalic plate are two very short thoracic segments, both together not so long as the cephalic 
plate. The abdomen forms two-thirds of the length of the body. There are nine well-marked 
abdominal segments seen from above, and six short well-marked urosternites, besides the basal 
triangular urosternite. The chelicene are three jointed, and the hands are bent inward somewhat 
as in Nemastoma. Pedipalps six-jointed, considerably longer than the body, the joints simple, not 
spiny; the fifth joint longer than the others, much swollen; the sixth oval, simple, not spiny. 
Second pair of legs (probably) ending in multiarticalate whiplash-like tarsi. One pair of legs,' 
either first or third, with undivided tarsi. 
This genus does not approach very near any of the European genera, such as Liobunum, 
Megabunus, Oligolophus, Acantholophus, etc. It approaches Prosalpia most in the form of the 
body, especially in the relations of the cephalic pin te to the abdomen and the size of the chelicene; 
but differs in the pedipalps being simple, while the first and third pair of legs are probably quite 
different in the undivided tarsal joint. It appears to belong to Simon’s subfamily Phalangiinse, 
but has no very close affiui ties to any of the European genera. 
Specific characters.— Body dark brown; appendages of a pale horn color; cephalic plate 
between one-third and one-half as long as broad. Eyes large, prominent, contiguous, scarcely 
situated on an eminence; they are black and well developed. The abdominal segments above with 
numerous scattered dark granulations, which become larger dorsally; a series of large, short, but 
broad, dorsal transverse blackish discolorations ; a broad, dusky, lateral, diffuse band low down on 
the sides of the tergal sclerites next to the upper edge of the urosternites. Chelicene pale horn 
color, black at the tips of the fingers. Second joint moderately long, equal to the hand of the 
third joint in length; mauus rather thick, oval in outline; the outer surface with numerous fine 
setae; the fingers very unequal, the outer or movable one about two-thirds as long as the manus, 
a good deal curved, with a single tooth near the end, and a series of about twenty three or twenty- 
four separate, stiff, straight, even setae, corresponding to the serrulain Phalangodes; inner finger 
(thumb) straight, not much over half as long as the other finger, with two or three teeth near the 
tip, and along the inner edge a sinuous series of small setae of unequal length, which ends at the 
innermost tooth. The pedipalps are from one-fourth to one-third longer than the body ; the first 
joint is as thick as long; second twice as long as thick; third twice as long as second and not so 
thick; fourth not so long as third but considerably thicker; fifth longer than any of the other 
joints and much swollen, oval in form; sixth no longer than fifth is wide, and obtuse at the tip, 
contracted at the base; all beyond the basal joints densely and finely setose. 
Gt the legs, which were unfortunately detached from the specimen, two were observed; what 
were perhaps the first pair are five-jointed, the basal joint minute, the second and fourth of equal 
length, the third not being much longer than second is thick at base, while the tarsus is long and 
slender, tapering to the minute claw; second leg (!) very long, first joint very small and short, 
second shorter than fourth, the third between one-third and one half as long as the second, the 
fourth, with joint five, divided at the end into nine minute joints, and the last joint (joint six) sub¬ 
divided into twelve joints, the last being equal in length to the four preceding, and bearing a single 
minute claw. Length of body, 4““; thickness, 2.5'““; width, 2““. Bat Cave, Carter county 
Kentucky. (Packard.) Two specimens. ? 
Family NEMASTOMATIDiE. 
Nemastoma troglodytes Pack. Plate XIY, figs. 3, 3a, 3b, 3b'. 
Nemastoma troglodytes Pack., Bull. Hayden U. S. Geol. Surv. Terr., iii, 160, 1877. * 
Ten females. Body rather long and slender compared with the European N. dentipalpis Koch, 
the latter being short and ovate, while our species is contracted at the base of the abdomen. The 
eye-tubercle is rather large and prominent; the eyes themselves well developed, black in recently- 
* Nov. genus; ^Xsypaioi, inflated; Kepai, horn or feeler. 
