156 AMERICAN SPIDERS AND THEIR SPINNINGWORK. 



labium subtriangular, and, like the maxillpe, dark lirown, with yellow tips ; mandibles 

 colored as the cephalothorax, dark towards the fang, at which point also they narrow on 

 the inside ; clothed with white bristles. 



Eyes: Ocular quad, on a rounded prominence (Fig. 21)) ; MF decidedly larger than 

 MR, separated by about 1.5 diameter; at the same distance from the margin of the clypeus ; 

 length of the quad about equal to the front, the rear narrowest; MR separated by about 

 their diameter. Side eyes upon tubercles, but hardly so pronounced relatively as the 

 central prominence. SF the larger; the two scarcely contingent. Clypeus 1.5 diameter; 

 3IF high ; the front row is slightly recurved, aluiost aligned, an<l shorter than the rear low, 

 which is slightly procurved. 



Legs: 1, 2, 4, 3; moderately stout, heavily clothed with white Ijristles, and at points 

 with yellowish curved hairs, and jirovided with numerous strong white spines, set in dark 

 and well elevated sockets ; color, orange brown ; the femora somewhat darker, or even 

 blackish. Palps like the legs, heavily armed with spines and bristles. One specimen of the 

 same species has bright orange legs, without decided annuli, ))ut the femora of flnst, second, 

 and fourth legs marked with black bands, which cover three-fourths of the surface of the 

 first two and one-half of the fourth pair ; the femur of third leg is without the dark 

 bands, but has a slight median annulus. 



Abdomen: Subtriangular in sliajJC, longer tluui broad, arched upon the dorsum, but 

 somewhat flattened upon the sumnut antl rounding to the spinnerets, which are distal. It is 

 heavily clothed with simjile white l)ristles with lirown pits, which are clustered more closely 

 in a bushy tuft around the base; numerous smaller curved bristles of dark color are scat- 

 tered over the entire dorsal surface ; between these larger white ones and on the sides, 

 mostly placed together, are golden yellow short curved bristles, which considerably modify 

 the color. On one siiecimen, from San Domingo, the dorsum is briglit yellow, with branch- 

 ing longitudinal lines from the middle to the ajiex ; the sides are marked with yellow. On 

 the specimen described the abdomen appears to have been a uniform yellow color, with a 

 darker cordate band or folium occujiying the gi'eater part of tlie doi-sum. The venter 

 (2a, 2c) is a broad sulitriangular patch, shaped like an old fashioned chapeau, of yellow or 

 yellowish color, entirely girdled by an irregular ribbon of yellowish white ; on the chapeau 

 six dark or yellow spots are symmetrically aiTanged on either side of the long scapus. The 

 venter, like the rest of the spider, is covered with numerous bristles and bristlelike hairs ; 

 along the edge of the gills these stand thickly and are white. Sjiinnerets dark orange ; on 

 a specimen from Florida, bright orange. The ejiigynum is most remarkable for the length 

 of the scapus (2c), which reaches over the entire venter to the base of the spinnerets; it 

 is narrow and tapers nearly to a point, is without groove or spoon, but exceedingly rugose 

 and with a light line of hairs along the median of the lower surface. The vulval porch is 

 scarcely wider than the base of the scapus, and the portuho are not exposed to view. In 

 only one specimen (Florida) is this organ preserveil intact, in two others it is broken off. 

 For this rea.son, in the descrijition of this spider, as first given in the Proceedings of the 

 Academy of Natural Sciences of Philadelphia, I erred concerning the form of the epigynum 

 by describing the species from examples from which the long scapus had been broken off. 

 The fourth specimen, which I subsequently found, was in perfect condition, and thus permits 

 me to correct this error. 



Distribution: I have three specimens in my jjossession, all females; one froui Florida 

 (Fig. 2) ; one from San Domingo, collected by the late William II. Gabb ; one from Swan 

 Island, Carribean Sea, from Mr. C. H. Townsenil ; a fourth from the latter locality was sent 

 by me to Dr. T. Thorell. From this showing the species would apiiear to be limited to the 

 Gulf States and the tropical islands along the coast. It will i>ro))al)ly be found widely dis- 

 tributed throughout the northern parts of South America. In general form it resembles closely 

 E. ravilla and E. bivariolata, but lacks the circular blisterlike abdominal markings which 

 characterize E. bivariolata. The female specimen marked in the Marx collections E. ravilla, 

 and so recognized by Count Keyserling, lacks about one moult of maturity, and the epigy- 

 num (Plate v., Fig. 7a) is so difterent in length and structure from that of E. lialaustina as 

 drawn (Plate IV., Fig. 2c), that one doubts whether a final moult could overcome the difl'er- 



