DESCRIPTION OF GENERA AND SPECIES. 241 



femora-I, II the entire 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. 



AHDOMEN : 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 venter; 

 color green, the surface beautifully reticulated, and covered 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 eubtriangular atriolum, with a short scapus (but rather longer than 

 shown in Fig. 7b), rounded at the tip. 



MALE: 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-lV, and at 

 least one underneath femora-Ill; coxse-I have spurs on the articulation with the trochanter. 

 The sternum is decidedly cordate, and the labium even 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. lOa.) _ 



DISTRIBUTION : 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 (KEYSERLING). Plate XX, Figs. 9, 10. 



1865. Epeira maculata, KEYSERLING . . Verb. Zool. Bot. Gesellsch. Wien., p. 827. 

 1884. Epeira 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. maculata is, relatively, rather longer and a more 

 even oval than A. gibberosa, which is somewhat 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. 



DISTRIBUTION: 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 maxilla) 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 



