228 AMERICAN SPIDERS AND THEIR SPINNINGWORK. 



Eyes: The ocular quad (Fig. 9c) is slightly wider in front, and is longer than wide; 

 MF are separated by 1.7 diameter, and are larger tlian MR, which are separated l)y less than 

 a diameter; the space between MF and SF about equals the space between ]\IF; SF are 

 slightly smaller than SR, and the two eyes are scarcely contingent; SR placed well to the 

 side of SF, making with the front row of eyes a continuous curve. The space between INIR 

 and SR is at least three times greater than between MR; front e)'e row recurved; rear row 

 slightly procurved; MF are placed close to the margin of the clypeus, and project over it. 



Legs : 1, 4, 3, 2 ; the color in some specimens is dark green, with strong blackish 

 brown markings at tips of joints, which embrace half or more of the length of the femora ; 

 in others these annular bands are less decided, leaving the legs, like the cephalothorax and 

 abdomen, prominently green ; they are rather sparingly armed with long brown spines and 

 with stout short bristles on the two terminal joints. The mandibles are conical, on the 

 same plane with the face, by which they are overhung. 



Abdomen: A long oval, widest in front; color green, with a lighter band jiassing from 

 the base to the apex, in some individuals marked on the edges of the dorsum by scalloped 

 bands of light brownish hue. A median line of brown passes along the entire dorsum, with 

 curved radiating lines on either side. The dorsum is rounded at the base, curved down- 

 ward in the middle, and terminates in two decided points, separated by a deep triangular 

 bifurcation or notch, giving the apex the form of a fish's tail. Four conical tubercles are 

 placed on the base of the dorsum, two at the shoulders and two farther back more widely 

 separated than the former. The venter is a brownish patch, with median spots of green, 

 and a green marginal band between spinnerets and epigynum. The spinnerets are placed 

 nearly midway of the abdomen, caused by the greatly projecting caudal part; they are 

 surrounded by a broad white band, which extends along the venter as far as the epigynum, 

 which is a subtriangular flap, without prolonged scapus. (Fig. 9b.) 



Male: The only male which I have is immature, apparently lacking one moult of 

 maturity. It ia about 4.5 mm. in length, and resembles the female. (Fig. 10.) 



Distribution: I found this species on Merritt's Island, Indian River, Florida, nested in 

 great numbers on the porch of a rustic hotel. Its general habits, snare, and method of pre- 

 serving its cocoons resemble that of Cyclosa conica and C. caudata. 



,■ ,- ,' ' .■? '' .-■•_,- 

 No. 80. Cyclosa Thorelli, new species. Plate XIX, Fig. 11. 



Female: Not quite mature. Total length, 11 mm.; abdomen, S mm. long, 2 wide; 

 cephalothorax, 3.5 mm. long, 1.7 mm. wide. 



Cephalothorax : A long oval, truncated and scalloped at the base, high and peaked ; 

 the fosse a deep slit along the summit of the corselet, which decidedly slopes both back- 

 ward and forward; the head much depressed; almost as wide at the face as at the cephalic 

 suture, which is indistinct. Color dark yellowish brown, with yellowish irregular streakings 

 niton summit of corselet and base of caput. Both corselet and caput sparsely furnished 

 with short, white, bristlelike hairs, which continue around the face. The sternum (Fig. lib) 

 shield .shaped, with scalloped edges pointed at the apex ; decidedly longer than wide ; the 

 sternal cones well marked; rounded in the middle; color yellowish brown. The labium is 

 triangular; not more than one-third tlie height of the maxilke, which are rounded, of a 

 distinct Epeiroid type, but slightly longer than wide. 



Legs: 1, 4, 2, 3; stout; not heavily armored, although in the specimen under descrip- 

 tion the spines and bristles have been lost in the alcohol. Color yellowish, witliout annuli ; 

 but with traces of longitudinal stripes on some of the joints. The mandibles are conical ; 

 quite divergent at the tijis, and sloping backward a little toward the sternum. 



Eyes: Ocular quad (Fig. lOe) longer than wide, and the front slightly longer than the 

 rear; MF are black, and separated by at least 2.5 times their diameter; and are smaller 

 than MR, which are amber color, and separated by about 1.5 their diameter. The quad is 

 placed upon a smooth rounded prominence. The side eyes are distinctly separated, but 

 approximated ; SF larger than SR ; the latter placed well to the side ; the two upon a sliglit 

 tuljercle. SR are widely separated from ^IR liy at least twice the area of the latter; IMF 



