DESCRIPTION OF GENERA AND SPECIES. 159 
what cordate; color dark brown, well covered with hairs, especially on the margin, Labium 
subtriangular, half as high as maxille, which are yellowish brown, subtriangular at the 
base, as is the labium. 
Lras: Order 1, 2, 4, 3; dark yellow, strongly annulated both at tips and middle of the 
joints, with wide dark brown patches; the feet black; armed with black or blackish brown 
spines and dense white hairs, which are longer upon the bases of the femora and under- 
neath and inside thereof; palps colored and armed as the legs; mandibles strong, dark 
brown, conical. 
Eyes: Ocular quad on a high, rounded, brown eminence, the rear manifestly wider than 
front and equal to sides; MF smaller than MR and separated by 1.5 to 2 diameters; MR 
separated by about 1.8 diameter. Side eyes placed on tubercles, contingent, SF somewhat 
larger than SR. MF separated from SF by more than their area; clypeus high, being as 
much as, or more than, the area of MF, or about three times the diameter of MF; front 
row slightly recurved, the longer hind row procuryed; the space between SR and MR equal 
to about 1.5 the area of MR. The ocular quad is free from hairs, and the long gray hairs 
which so profusely cover the interspaces of the ocular area in Epeira carbonaria are but 
slightly represented in the specimen under description. 
Aspomen: A long oval, narrowed at the base as well as apex; dorsum arched to the 
spinnerets, which are distal, overhanging the cephalothorax at the base. The ground color is 
yellow, heavily clothed with white hairs, thickest on the base in front and upon the 
sides; the folium is a broad, brown, scalloped band passing from the base, slightly narrow- 
ing to the apex; in the centre is a yellow herring bone marking (Plate V., Fig. 9), with a 
broad arrow at the base and tapering towards the apex; color yellow, modified by the heavy 
pubescence. The sides are yellowish brown, clothed heavily with white pubescence, which 
passes down to the venter, where the white hairs are mingled with brown. The ventral 
band is a rectangular brown patch, with yellow margin and a broad yellow median band; 
spinnerets brown. The scapus of the epigynum is tolerably long, of almost equal width for 
about two-thirds of its length, when it tapers to a point. It is narrower relatively than 
that of Epeira carbonaria, grooved upon the lower side, and covered with strong white 
hairs. 
Mate: The male differs little in general characteristics from the female; the head is 
more attenuated at the face; the color of the cephalic corselet suture is dark grayish 
brown ; the bristlelike hairs upon the abdomen are long and intermingled with numerous 
black and yellow bristles, the herring bone median pattern is well defined and resembles 
that of the female. The legs are yellow or yellowish brown, strongly annulated, but not 
quite so widely as the female. The metatarsi are well provided with spines, which appear 
also on the under sides, especially of first and second legs. The tibis of second legs are 
curved, very little thickened toward the tip, and provided with additional clasping spines, 
which are strong but not numerous, arranged in two rows. The tip of the joint has about 
four of these black spines, and on the inside is a strong corneous tooth or noteh, which has 
probably been the base of a long bristle. This part is similar to Epeira carbonaria, but not 
quite so strongly developed. The tibia about equals in length the metatarsus. 
Disrripution: I haye seen but one pair of this species apparently identical with that 
which Count Keyserling has described, and this was collected in Clear Creek County, Col- 
orado. (Marx Collection.) 
No. 17. Epeira bivariolata Campriae. Plate V., Figs. 5, 6, 5a, 6a. 
1889. Hpeira bivariolata, Krys. in litt, . Marx Catalogue, p. 543. 
1890. Hpeira bivariolata, Campripar . . Biolog. Centrali-Amer., Aran., p. 27, pl. vi. 15. 
1892. peira bivariolata, Knysmruimna . Spinn. Amerk., iv., Epei., p. 100, tab. v., 74, 
Fematn: Body length, 11 mm.; abdomen, 7 to 8 mm. long, 7 mm. broad; cephalo- 
thorax, 5 mm. long, 8 mm. wide. The general colors in alcoholic specimens are yellowish 
brown for fore part of body, and yellow with brown markings for the abdomen. In life, 
