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DESCRIPTION OF GENERA AND SPECIES. 197 
Genus ORDGARIUS, Krysreriine. 
The most striking distinctive characteristics of this genus are found in the cephalo- 
thorax. The corselet is rounded at the margin, but rises with almost perpendicular walls 
to the crest. The base is sharply truncated, sloping rapidly upward to the crest. The skin 
is covered with many warts, particularly numerous and marked upon the caput and face. 
The summit of the caput is distinguished by two castellated prominences, with strong 
protuberances on either side. The sternum is scutellate, somewhat longer than wide; the 
labium wide, rather low; the maxillze as in Epeira, scarcely as long as wide. The 
eye rows are both much procurved; divided into two groups, as in Epeira; the central 
quad upon a low rounded eminence rising at the base of the bossed forehead; the pairs 
placed close together, so that the side of the quad is much shorter than either the front 
or rear. The side eyes are placed low down upon the face, on large rounded tubercles; 
the eyes are all small, not greatly differing in size. The clypeus is very high, as is also 
the forehead; the middle eyes of the ocular quad are placed a little below the centre of 
the face. The legs in order of length are 1, 2, 4, 3; stout, provided with bristles and 
hairs, but without spines. The abdomen is subglobose, as wide as or wider than long, 
and distinguished by two prominent shoulder humps. 
No. 54. Ordgarius cornigerus (Hen1z). Plate XII, Figs. 1, 1a-d. 
1850. Zpeira cornigera, Hentz... . J. B.S. 20; Id., Sp. U. S., p. 123, xiv., 8. 
1879. Cyrtarachne cornigera, Keysertinc Neue Spin. Amer., i., Verhn. d. z. b. Ges. Wien, 
p. 300, iv., 4. 
~ 1879. Cyrtarachne bicurvata, Becker. . Ann. Soc. Ent. Belgique, p. 77. 
1889. Cyriarachne cornigera, McCook . Amer. Spid. and their Spinningwork, Vol. IL., 97. 
1889. Ordgarius cornigerus, Marx . . . Catalogue, p. 541. 
1892. Ordgarius cornigerus, Knysertinc. Spinn. Amerk., Epeir., p. 40, ii., 34. 
Frmate: Total length, 12 mm.; abdomen, 8 mm. long, 8 mm. wide; cephalothorax, 
5 mm. long, 4.5 mm, wide. The general colors of the fore part are red or reddish brown 
and yellow, with dark brown markings. The abdomen is yellow, with dark or brownish 
markings upon the front. 
CrrmaLormorax: Rounded at the margin, and rises with almost perpendicular walls 
to the crest; the base sharply truncated; the skin covered with many warts, particularly 
numerous and marked on caput and face; summit of the caput marked by two castellated 
prominences, each with two strong tubercles on either side. The entire front of the 
creature presents a peculiar appearance on account of the knobby or warted condition. 
(Fig. 1b.) Sternum shield shape, somewhat longer than wide, has sternal cones, is rounded 
in the centre, depressed at the base towards the Jabium, and sparsely covered with hairs; 
in some species the color is yellow or dark brown; in others dark brown. The labium 
is triangular, rather low, but wide; the maxille scarcely as long as wide; obtusely tri- 
angular at the base; color of labium and maxillee brown, with yellow tips. 
Eyrs: The ocular quad (Fig. 1b) is upon a greatly elevated prominence; front shorter 
than rear, and about equal to sides; MF somewhat larger than MR, separated by about 2.5 
diameters or more; MR separated by about three diameters, and divided by a longitudinal 
notch ; side eyes separated by about a radius, not greatly differing in size; set on tubercles, 
with long bases that extend to the clypeus margin; both rows procuryed; rear row longer; 
‘elypeus high, twice or more the area of MF; on either side above the mandibles is a 
rounded hump, much warted. 
Leas: 1, 2, 4, 3; very stout, the femora and patella covered with yellowish bristles and 
hairs, but without spines; color yellow, with dark brown apical and median annuli; palps 
similarly colored and proyided, quite wide and stout; mandibles conical, wide at the base, 
