a Be 
DESCRIPTION OF GENERA AND SPECIES. 241 
femora-I, II the nitive length, along which are placed a number of long, aculeate, spine- 
like bristles; the palps are colored and armed as the legs, but a lighter hue, and the spines 
curved ; the mandibles are conical, colored as the face, receding at the tips. 
AspomEn: Ovate, rounded at the base, which overhangs the corselet, somewhat 
narrowing at the spinnerets, which are distal; the dorsum highly arched; color green, 
without folium, but the apical half of dorsum and sides marked strongly by blackish, 
longitudinal stripes, passing downward to the spinnerets and along the sides of the yenter; 
color green, the surface beautifully reticulated, and coyered with short, yellowish pubes- 
cence; the venter yellowish green, surrounded by a broken band of yellowish green or white, 
which encompasses the spinnerets, with dark anterior corners; the spinnerets brown; the 
epigynum has a wide subtriangular atriolum, with a short scapus (but rather longer than 
shown in Fig, 7b), rounded at the tip. 
Mate: Fig. 8. Somewhat smaller than the female, which it resembles closely in 
general form and color, The legs are without any special clasping armature, but the few 
spines are long and strong. Femora-I, II have the same black longitudinal stripes as the 
female on the under side; a few aculeate bristles are placed underneath femora-IV, and at 
least one underneath femora-III; coxse-I haye spurs on the articulation with the trochanter. 
The sternum is decidedly cordate, and the labium eyen feebler, relatively, than in the 
female. The digital joint of the palp is large, subglobose; the embolus and associated parts 
dark brown, glossy, corneous. (Fig. 10a.) 
Disrripution: This beautiful spider is common in the woods surrounding Philadelphia, 
and is widely distributed throughout the United States, my collections ranging from New 
England southward to the Carolinas (Gentry) and to Florida, and as far to the northwest 
as Wisconsin (Professor Peckham). 
No. 93. Abbotia maculata (Kryserurna), Plate XX, Figs. 9, 10. 
1865. Epeira maculata, Krysrruina . . Verh. Zool. Bot. Gesellsch. Wien., p. 827. 
1884, peira gibberosa, Emerton . . . N. E. Ep., p. 317. 
1889, Epeira maculata, Marx... . . Catalogue, p. 546. 
A. maculata in its general characteristics so closely resembles A. gibberosa that detailed 
description would be mere repetition. The species might, indeed, with much propriety be 
classified as a variety of the latter. The differences, however, are striking, although chiefly 
in color markings. The abdomen of A. lata is, relatively, rather longer and a more 
even oval than A. gibberosa, whi®h is som@wMat wider and thicker at the apex; the latter 
is marked by several distinct, blackish stripes, drawn from the dorsum along the sides 
downward and backward. (Fig. 7a.) In A. maculata these stripes are lacking, and instead 
thereof, on the median apical part of the dorsum, are six black circular spots, arranged 
symmetrically three on each side, Again, A. maculata is distinguished by lacking the 
distinct blackish longitudinal stripe beneath the femora of legs-I, II of A. gibberosa, 
Disrripution: The species has substantially the same geographical distribution as A. 
gibberosa along the entire Atlantic Coast, and inward perhaps to the Mississippi River, at 
least. The habits of the two congeners are also the same. 
Genus ARGYROEPEIRA, Emerton, 1884. 
The genus Argyroepeira includes a number of spiders intermediate between the typical 
Meta and Tetragnatha. The legs are long and ‘slender; their order of length 1, 2, 4, 3; 
the first two much the longest, and not greatly different in length. The maxillee are 
longer than those of Meta, but less in length than those of Tetragnatha; broad at the 
extremities, and divergent. The sternum is subtriangular. The falces are powerful, but 
not developed to the remarkable extent usual in Tetragnatha. The abdomen. is sub- 
cylindrical, stouter, and shorter than in Tetragnatha; it is often rather humped before, and 
