DESCRIPTION OF GENERA AND SPECIES. 145 



at the face. The color of the cephalothorax is uniform orange brown, with a light band, 

 heavily pubescent, on the extreme margin. The skin is glossy, but little pubescent. The 

 legs are orange to orange yellow, with orange brown annuli at the tips of the joints, and 

 median annuli along femurs-I and II. The color of the tibia is rather lighter than that 

 of the femur, and the metatarsus and tarsus still lighter yellow. The tibia of leg-II is 

 curved, thickened about the middle, and with a trijjle row of short, black, toothed claisping 

 spines upon the inner side. The spines upon the femora are shorter ; those upon the tibia 

 of leg-I are long, yellowish brown, with dark bases. The coxfe of leg-I has upon the 

 side next leg-II a short, curved brown spur, curved towanl the face ; and coxa'-II has at 

 the base near the articulation of the sternum a slight conical process. Tlie palps are as in 

 Plate I., Fig. Ic, 2b. The abdomen is a long oval, colored and marked upon the dorsum 

 with a folium not greatly differing from that of the female. 



Distribution: As Marmorea is widely distributed throughout Europe and the Amer- 

 ican specimen is found in most jiarts of the United States, the species is thus seen to have 

 an extended distribution. I have collected it from New England southward to Florida, 

 westward through Pennsylvania, Ohio, Illinois, Wisconsin. It is found in Arizona, but I 

 have as yet received no specimens from the Pacific Coast. 



No. 6. Epeira trifolium Hentz. Plate I., 3a-6; PI. II., 3; Vol. II., PI. IV. 



1837. Epeira jaspidatii, WAhCKESAEii . Ins. Apt., ii., p. 59; Abbot, G. S. No. 111.^ 



1847. Epeira trijolium, Hentz J. B. S., v., 471; Sp. U. S., 110, xiii., 1 



■ 1847. Epeira aureola, Hentz Ibid., pi. xxi. (xiii.), 2. 



1884. Epeira (rifolium, E.MERTON . . . N. E. Ep., p. 306, pi. 33, Fig. 8. 



1889. Epeirn Irifotiitm, ]McCooK .... Amer. Spid. and their Spinningwork. 



1889. Epeira trifoliinn, ;M,\rx Catalogue, p. 548. 



Female: Total length, 15 mm.; cephalothorax, 7.5 mm. long, 6 mm. wide; abdomen, 

 12 mm. long, 8 mm. wide. This is one of our largest indigenous species, and varies much 

 in size from the above length and upward to adult females of 10 mm. long. It is especially 

 distinguished by great differences in color at different stages and among different individ- 

 uals, as illustrated Vol. II., Plate I., p. 48. 



Ceph.\lotiiorax : A rounded oval or cordate, truncated and indented at the base ; corselet 

 flat on top, the fosse a deep transverse slit; cephalic suture sufficiently marked, corselet 

 grooves rather indistinct ; color brown, with a yellow marginal band on the dorsum, passing 

 upward to the sides of the caput; head lowly arched; face depressed, wide, quadrate, with 

 gray pubescence. The sternum is shield shaped, dark brown, the median band of lighter 

 color ; sternal cones marked ; labium blackish brown, lighter at the tip, as are also the 

 maxillie, which are longer than or as long as wide. 



Eyes: Ocular quad on a well rounded prominence, the front wider than rear and 

 narrower than sides ; MF separated by 1.5 to 2 diameters, somewhat larger than MR, 

 which are separated by one diameter or more ; side eyes on tubercles, separated by about 

 the diameter of SR, which are smaller than SF; MF divided from SF by about 1.5 the 

 area of MF, or say 2.5 times their interspace ; clypeus height about two diameters or more 

 of MF, and with marginal row of strong yellow haire. Tlie front row recurved and shorter 

 than the procurved rear row. 



Legs : 1, 2, 4, 3 ; strong, stout, not long for the size of the species, abundantly pro- 

 vided with grayish yellow hairs an<l bristles and yellow spines, which are dark brown on 

 the basal half; color yellow, with bright brown apical tips, patellte entirely brown, feet 

 brownish black. Palps light yellow, without annuli, thickly provided with strong yellow 

 spines and bristles. Mandibles strong, conical, arched at the base, and swollen on the 

 outside at the articulation with the clypeus. 



' Abbot's drawing of this species in tlie MSS. in Kensington Library of the Brit. Mus. Nat. Hist, 

 appears to be E. trifolium Hentz; but there is enough doubt as between this and E. iusularis Hz. to 

 justify leaving the name thus. 



