160 . AMERICAN SPIDERS AND THEIR SPINNINGWORK,. 
according to Cambridge,! the falces, legs, and lower part of the abdomen are orange, ap- 
proaching light burnt sienna; on the abdomen, sharply outlined, bright green, metallic 
when first caught, bordered anteriorly by a narrow white line, posteriorly by ten black 
ocellee with clear white margins. z 
CrpHALoTHoRAX: Corselet well rounded; orange brown; the head depressed and covered 
with white hairs. Sternum orange yellow, slightly pubescent, with low sternal cones before 
coxe-II1; slightly elevated in the centre; about as wide as long. The labium and maxillee 
as in Epeira. ‘ 
Leas: 1, 2, 4, 3, as follows:. 28.1, 19.8, 17.1, 11.6 mm.; they range in color from light 
yellow to light brown. The joints are annulated, with reddish brown color; armed with 
bristles, and rather short spines. Palps as the legs. Mandibles long, conical, widely sepa- 
rated at the tips. 
Eyrs: Ocular quad on a rounded prominence, the sides but little longer than the front 
(if any), and the latter wider than the rear; the four eyes about equal in size; MF sepa- 
rated about 1.5 to 2 diameters; MR separated one diameter. MF removed from SF about 
1.3 alignment; SR from MR about twice their alignment; side eyes propinquate, about 
equal in size. The front row of eyes is aligned, or but slightly recurved; the longer 
rear row procurved; height of clypeus 2 to 2.5 diameters of MF. 
Appomen: Almost as wide at the base as long, bluntly pointed in front, forming thus 
a basal triangle. The dorsum is a rounded yellow triangle (in life green with metallic 
lustre), in the middle of which is a brown folium scalloped or triangulated at the margin 
and diminishing to the apex; a row of brown bristles marks the base, and the dorsum is 
covered with similar but shorter hairs with brown pits, which modify the color. On the 
dorsal median, well towards the apex, are two circular prominences, corneous, shining, each 
about one millimetre in diameter, and separated from each other about three diameters ; 
a light yellowish line girdles their point of union with the abdomen; they appear like 
blisters upon the surface; are destitute of hairs. The venter is a broad patch whose margin 
is yellow, enclosing a subtriangular patch of brown, the whole reticulated ; four brown dots 
arranged in a square mark the anterior part near the gills; spinnerets brown, surrounded 
at their base by a yellow brown band. The epigynum has a long, straight, rugose scapus, 
narrowing from the base towards the point (Fig. 5a); the base rather flattened, the apex 
rounded. 
Mate: Fig. 6, 6a. About equal in length to the female, or a little longer. Cephalo- 
thorax, from 5 to 6 mm. long and 4 to 5 mm, broad. The MF eyes are relatively larger 
than MR and more widely separated than in the female. The palp is marked by a strong 
boot shaped projection from the digital joint. (Fig. 6a.) The cephalothorax is yellowish 
brown, strongly marked with gray hairs. The patella of the first and second pairs of legs 
is long and thin; the tibia of the second pair short, curved, and thickened at the end, 
and strongly armed with two rows of about four each clasping spines, while the metatarsus 
is also somewhat curved and armed at the base with one very long spine, and a shorter 
one at the apex. The metatarsus-I is long, thin, and also slightly curved; a strong bent 
spur is on coxa-I next the trochanter. The abdomen is longer than broad, oval, of a 
greenish or olive color (in alcohol), and marked at the base, along the sides towards the 
apex, with long grayish brown spinous bristles. The specimen in hand appears to want 
the corneous blisterlike plates in the middle of the apical part, as above described in the 
female. 
Disrrisurion: Cambridge describes this species from Gautemala; Dr, Marx has an 
undeveloped female from Utah, one from Texas, a mature male from Florida like the 
above (which is from Summit Canyon, Utah), but lacking the dorsal corneous plates. The 
female above described is from Lake Klamath, Oregon. This would indicate a wide dis- 
tribution in the subtropical parts of the United States, and indeed of North America; and 
that the species has found its way northward to Oregon, along the Pacific Coast, and east- 
ward to the American Plains. (The Marx Collection.) 
1 Biologia Centrali-Americana, Araneidea, p. 27, pl. vi., 15. 
i 
