144 AMERICAN SPIDERS AND THEIR SPINNINGWORK. 
Frmare: Body length, 15 mm.; cephalothorax, 7 mm. long, 6 mm. wide; abdomen, 
12 mm. long, 7 mm. wide. This species varies greatly in size, ranging from the aboye to 
10 mm, long, and an abdominal width of 5 mm. The description following is of the 
American variety, E. conspicellata (E. insularis), as the one most prevalent and generally 
known. The two varieties are so closely interblended that it is often difficult and indeed 
impossible, to positively distinguish them, but the figures in the plates will sufficiently 
show the features of the most divergent forms. E. marmorea (Plate III., 6) more closely 
resembles the European specimens, which I haye compared with examples sent me from 
Russia by Professor W. Wagner. I have found it in northern New York and New England, 
and not elsewhere. The variety E. conspicellata is the one which appears to prevail west 
and south of the aboye limits. It differs from the forma principalis chiefly by the brighter 
orange hues, the more sharply outlined folium, and by somewhat more distinctly annulated 
legs. In general size, form, and habits the species are alike. 
CrrHaLorHorax: Almost as wide as long; truncated and indented at the base, shelving 
upward to the fosse, which is deep; cephalic suture well marked, corselet grooves sufficiently 
distinct; flat upon top, rounded at sides; head slightly arched, and a very little elevated 
above the level of the corselet; color yarying from orange to yellow, with darker stripes upon 
the sides and middle of caput; skin glossy and lightly pubescent. Sternum heart shaped, 
indented at the edges, with decided cones in front of the cox and labium and upon the 
apex; flattened in the middle, lightly pubescent, orange brown, with a lighter yellowish 
median band; lip longer than wide, rounded at sides, tips subtriangular, more than half 
the height of the maxille. Maxille rounded at the sides, tips obtusely triangular and 
inclined towards each other, length and width about equal. Color of maxille and lip 
orange brown, with light yellow tips. 
Eyzs: Ocular quad on a rounded prominence, wider in front than rear, sides about 
equal in length to front; MF separated by about 1.3 diameter, and somewhat larger 
than MR, which are separated by about one diameter. Side eyes on tubercles, SF larger 
than SR, separated by about the radius of SR; MF remoyed from SF by about 2.5 times 
their intervening space, or 1.3 their area. Front row recurved, rear row longer and pro- 
curved. Height of clypeus about 1.5 diameter MF or less; a line of bristles extends along 
its margin. 
Leas: Order, 1, 2, 4, 3; color usually a bright orange both above and beneath as far 
as the tibia, whence the color is yellow, with dark brown or blackish tips at the joints; 
provided with long gray hairs and stout bristles, yellowish upon the yellow parts and black 
upon the dark parts; numerous spines, long, yellowish white, with brown bases. Palps 
lighter in color than legs, tips black, and terminal joints heavily covered with bristles and 
spines. 
Aspomen: Ovyate, widest about the middle, highly arched on the dorsum, tapering to 
the distal spinnerets; color usually bright yellow, a broad folium narrowing to the apex 
with at least six indentations, which are distinctly marked out with broad margins of 
brown. The median design is composed of a series of cruciform figures and triangles, which 
yary more or less according to specimens, but are tolerably persistent. The figure upon the 
base usually resembles a Maltese cross, though sometimes the upper arm is obliterated, 
giving the appearance of a trefoil. The next figure is sometimes cruciform, but the central 
part is occasionally obliterated, leaving the points grouped as a quatrefoil. Waving lines of 
yellow brown pass along the sides from dorsum to spinnerets. The ventral figure is a sub- 
triangular patch of velvety brown or black, bordered by a horseshoe band of yellow. Six 
compressed spots are arranged on either side of the median line. The spinnerets are 
usually orange color, though sometimes brown or blackish, with a yellow spot at either side 
of the base. The epigynum (Plate I., Figs. la, 1b; Figs. 2, 2a) has, in some examples, at 
least, the receptacles thrown up prominently above the surface; the scapus long, wrinkled, 
of nearly equal length throughout, but somewhat narrowing toward the tip, which is 
spooned, and the entire under surface furrowed. 
Mae: Individuals vary much in size, one specimen before me being 9 mm. long; 
cephalothorax, 5 mm. long by 4 mm. wide across the corselet, diminishing to about 2 mm. 
