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: 
DESCRIPTION OF GENERA AND SPECIES. 169 
* 
Lxas: 1, 2, 4, 3; stout, comparatively short; uniform orange yellow or yellow, without 
annuli; armed copiously with long yellowish white bristles, and rather short brownish 
spines; palps colored and armored as legs; mandibles dark glossy brown, corresponding 
with color of face, and strongly curved at the base; conical, somewhat separated at the 
tips; but little pubescent, except on inner edges. 
Aspomen: Ovate; dorsum well arched to spinnerets, which are placed directly under- 
neath the high apical wall; apex but little if any narrower than base; color yellow or 
yellowish green, which fades in alcohol to yellow; dorsal folium limited by an indistinct 
undulating ribbon; with a median longitudinal line branching from about the middle; skin 
beautifully reticulated and covered quite thickly with short, soft, yellowish hairs; at the 
sides the greenish yellow color of the dorsum is broken into elongated lobes of dark 
yellowish brown extending to the venter. The epigynum (Fig. 6c), viewed from the spin- 
nerets, shows a yellow scapus curved over from the base of the atriolum, like the clasp of 
a padlock; viewed from the side (6d) the scapus is seen to be free at the apex; the portulze 
on either side are glossy, blackish brown. 
Matin: Fig. 7. Somewhat smaller than female, being 7 mm. long; otherwise similarly 
marked, but in the specimens in hand the abdominal folium more decidedly marked. Legs 
uniform orange yellow; tibia—II not thickened, without any special clasping armature, and 
not more numerously provided with dark brown spines than leg-I; coxa-I has a marginal 
spur on the apex; in the palps (Figs. 7a, 7b) the digit is globular, the cymbium yellow and 
covered thickly with yellowish bristles; the embolus a simple curved hook; the radial joint 
hoat shaped, covered with a number of long yellowish bristles; the cubital joint also short 
and rounded ; these, like the humeral joint, are uniform yellow in color. 
Disrrisurion: I have collected this specimen in Florida, the only point from which I 
have specimens. 
No. 28. Epeira Thaddeus Henvz. Plate VII, Figs. 3, 4, 5. 
1847. Hpeira Thaddeus, Hentz. . . . . J. B.S. Voli-v.; 1p. 4783 Id; Sp. U. 8. p: 118, 
pl. 18, Fig. 6. 
1879. Hpeira baltimoriensis, Keyseruinc. N. Spinn. Amer. i., Verh. d. z. b. Ges. Wien, p. 305, 
pl. 4, Fig. 8. 
1884. Hpeira thaddeus, Emerton .. . N. E. Ep., p. 309, pl. 34, Fig. 9. 
1888. petra thaddeus, McCook . . . . Amer. Spiders and their Spinningwork. 
Femare: Total length, 7 mm.; abdomen, 6 mm. long, 5 mm. wide; cephalothorax, 
3.5 mm. long, 2.3 mm. wide; measurement taken from one of the largest specimens. The 
color varies from yellow and ecretaceous to the most brilliant purple and pink, marking the 
species as one of the most beautiful of our indigenous spider fauna, The legs vary in color 
from yellow to orange yellow and to yellowish brown, a variation which also marks the 
cephalothorax. 
CrpHALotHorAx: Corselet rounded, truncated, indented at base; dorsum high, arched; 
fosse distinct; corselet. grooves feeble; cephalic suture distinct; color yellow, flecked with 
brown, slightly pubescent; head colored as corselet, with dark median band in some speci- 
mens; caput slopes from the crest, is slightly pubescent, a band of long hairs down the 
middle; sternum shield shape, as broad as long, indented at edges, with sternal cones, one 
in the middle, which is raised; color uniform brown, rather glossy; labium, large, tri- 
angular, and maxillee broad as long, subtriangular at tip, colored like sternum. 
Eyrs: Ocular quad on a prominence; front decidedly wider than rear, and about equal 
to the side in length. Eyes about equal in size; MF oval, on a black base; MR round 
and yellow; MF separated by about 1.5 to 2 diameters; MR by about their radius; side 
eyes on tubercles, contingent, but equal in size; MF separated from SF by a little more 
than their area, and from clypeus margin by about one diameter; front row recurved, longer 
rear row procurved, 
