220 AMERICAN SPIDERS AND THEIR SPINNINGWORK. 
Eyres: Ocular quad on a rounded eminence, projecting in front; longer than wide, front 
narrower than rear; eyes on black bases; MF somewhat larger than MR, separated by 
about 1.3 diameter; MR separated about 1.5 diameter. Side eyes on high tubercles; SR 
larger than SF, propinquate, but not contingent; the space between SF and MF is equal to 
about 1.3 the area of the latter; space between SR and MR is at least one-third greater 
than that between SF and MF; clypeus height about three diameters MI’; front row 
slightly procurved, rear row much procuryed. 
Lees: 1, 2, 4, 3; not so stout at the thighs as A. cophinaria, and not tapering quite so 
sharply to the feet; color yellow, strongly annulated at the tips and between the joints 
with brown; covered with yellowish white hair and bristles, and with rather short brown 
spines; palps yellow, with little brown at the tips, strongly armed with brown spines and 
spinous bristles; mandibles yellow, with flecks of brown; conical, but not greatly tapering. 
AnpomEen: A long oval, rather truncated at the base (in young specimens subtri- 
angular) and narrow at the apex, which much overhangs the brown spinnerets; color 
silvery white, broken by lateral bands of black and yellow, alternating from base to apex ; 
dorsum not much arched, except in the female when gravid. A dark branching median 
line, which divides into four longitudinal lines, passes along the centre of the dorsal field ; 
the muscular pits are strongly marked, and the surface is punctuated irregularly with dots; 
the sides are marked by longitudinal stripes of brown and silver, the colors produced chiefly 
by the hues of the pubescence; the brown stripes contain many dark brown curved 
bristles; the ventral pattern is a broad brown patch, with eight circular silvery spots sym- 
metrically arranged on either side of the median; on the margins a ribbon of yellow or 
whitish yellow, which encompasses the base of the brown spinnerets in an interrupted 
band. The epigynum has a bowl shaped atriolum, brown, corneous, which is spanned in 
the middle by the scapus, that arches over the bowl from side to side, like the clasp of a 
padlock; the apex is not free, but attached to the posterior margin of the atriolum. (Plate 
XVI, Figs. 3a, 3b:) It is ae and has an opening at the point where the curve touches 
the venter. 
Mate: Plate I., 10, 11. About the same size as that of A. cophinaria, which it 
resembles in many respects. The cephalothorax and legs are uniform yellow or yellowish 
brown, the legs well provided with numerous spines, bristles, and hairs. The front eye of 
the lateral pair, as in the female, is decidedly smaller than the rear eye. Tufts of silvery 
white hairs are found along the margins of the cephalothorax, extending to the eye space. 
The abdomen has a brownish, scalloped band along the median line, with longitudinal rows 
of silver white hairs on either side. It is a long oval in shape, and, unlike the male of 
Cophinaria, is not bifid at the base. The venter is silvery white, with a long rectangle of 
blackish color drawn between the spinnerets and the epigynum. Instead of the three 
flattened processes projecting from the external margins of the palps, as in the case of the 
male of A. cophinaria, there is a curled or crescent shaped process, strongly marked with 
black chitine along the edge. (Plate II., 4.) The habits of the male, as far as known, are- 
precisely those of the male of A. cophinaria. 
Disrrrevution: The distribution of this species is coterminous with that of A. cophin- 
aria, at least I have rarely failed to get the two in the same general bound. I have taken it 
all along the Atlantic Coast, in the Middle States, and have specimens from the Pacific Coast. 
L. Koch reports it in New Grenada, Madeira, and Australia. 
No. 78. Argiope argentata (Fasricius). Plate XVI, Figs. 1, 2. 
1775. Aranea argentata, Fasricius . . Entom. System, ii., p. 414. 
1837. Epeira argentata, WALcKENAER . Ins. Apt., ii., p. 110; Appor, G. S., 551; 117, vol. 15. 
1839. Argiopes argentatus, Kocu, C. . . Die Arachn., v., p. 38, Fig. 360. 
1839. Argiope fenestrinus, Kocu, C. . . Ibid., p. 155, Fig. 361. 
1889. <Argiope argenteola, McCook. . . ‘Amer Spiders and their Spinningwork. 
1889. Argiope argentata, McCoox . . . Ibid., Vol. 1., p. 108. 
1889. <Argiope argentata, Marx ... . Calalogne, p. 541. 
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