DESCRIPTION OF GENERA AND SPECIES. 191 



broadly shield shaped, the edges rounded, and apex obtusely triangular; sternal cones long 

 ;ui(l distinct; the centre raised, and opposite the labium well elevated; color brownish 

 yellow, somewhat darker at margins; covered sparsely with dark bristlelike hairs; labium 

 subtriangular, thick, and large, more than half the height of maxillte, which are obtusely 

 triangular at tip, rounded at sides, somewhat longer than wide ; labium and maxillae brown, 

 with yellow tips. 



KYES: Ocular quad on a squarish prominence, more decided in front; quad front 

 slightly wider than rear, and almost equal to sides. The single specimen from which I 

 describe has an abnormal formation of MF eyes, one being twice as large as the other ; its 

 normal form I cannot therefore determine; the small MF eye is much less than MR, and 

 the larger one is somewhat larger. According to Cambridge " the fore central eyes are 

 almost as large as the hind centrals." The side eyes are about equal in size, separated by 

 about a radius; SF from MF by about 1.5 area of latter, or at least twice or more the 

 intervening space. The distance between MR and SR is greater. Clypeus height about 1.3 

 diameter of large MF eye, or twice diameter SF; margin with a row of white bristles; front 

 row slightly recurved, rear row procurved. 



LEGS: 1, 2, 3, 4; color yellow, or orange yellow, with blackish apical annul! at ends 

 of tibia and metatarsus; a broad black median annulus on metatarsus, and a lighter one 

 on tibia ; the femora are without annuli, but have a deeper hue of yellow ; armored rather 

 sparingly with short yellowish spines, and abundantly with bristles and hairs; the palps 

 yellow, with a slight brownish tinge at the tip; provided with curved spines and bristles; 

 the mandibles long, conical, arched at the base, with decided basal cog and a slight 

 swelling about the middle ; color yellowish brown at base, darker brown at tips, glossy and 

 pubescent on inner sides. 



ABDOMEN : Triangular ovate, much wider at base and narrowing toward apex, which 

 is rounded; spinnerets distal; dorsum slightly arched at the base, but rather flat on top; 

 dorsal field a yellow, gourd shaped pattern, without other marks, covered quite freely with 

 long, white, bristlelike hairs. The sides (Plate XXII., Fig. 4) are marked by long tooth- 

 like streaks of yellow; the venter (Plate XXII., Fig. 5) has a broad, black, central band 

 irregularly oval, surrounded on all sides by a belt of yellow, which also encompasses the 

 spinnerets in a broken ring; spinnerets orange brown, bases blackish brown. The epigynum 

 shows an atriolum but little prominent, a scapus short, wide at the base, and diminishing 

 at the rounded tip, covered beneath with short gray hairs. This organ, as figured by 

 Cambridge (Plate XIV., Fig. 6b) is much longer and narrower than in the specimen 

 before me. 



DISTRIBUTION : Fort Canby, N. M., Santa Barbara, Cal. (Marx Collection.) Cambridge 

 describes it from various points in Guatemala. In some of the specimens from Central 

 America the legs are bright burnt sienna in color, and the abdomen is emerald green, 

 closely dotted with minute chrome yellow spots ; over all a very dark cellular network of 

 dark lines. (See Fig. 6.) 



No. 49. Epeira spinigera CAMBRIDGE. Plate XIV, Figs. 3, 4. 



1889. Epeira spinigera, CAMBRIDGE . . . Biolog. Cent. Amer., Aran., p. 43, v., 9, 10. 



FEMALE: Total length, 9 mm.; cephalothorax, 3 mm. long, 2.3 mm. wide; abdomen, 

 6 mm. long, 4 mm. wide. General colors: the fore part of the body a uniform orange 

 yellow; abdomen, a pale yellow and black. In the elevation of the head, the character of 

 the mouth parts, the wide space between MF and SF, and the thornlike abdominal 

 tubercles this species resembles Wagneria tauricornis ; but the curvature of the eyes, the 

 form and spinous armature of legs are different, and more closely approach Epeira. 



CEPHALOTHORAX : Oval ; corselet rounded at margins ; fosse a lateral pit curved back- 

 ward ; corselet grooves indistinct ; cephalic suture very distinct ; caput highly arched above 

 the level of the corselet ; head quadrate ; face wide and strong ; color, orange yellow, with 

 flecks of brown on the corselet and base of caput; covered with short, yellowish white 



