THORELL ON ARANE^ OF COLORADO, 491 



Color. — Gephalotliorax of a dull browu hue, clothed with grayish- 

 brown, shorter, and black long hairs; the extreme margin is black ; the 

 furrows blackish. Sternum yellowish-brown ; mandibles and labium dark- 

 brown or piceous; maxilUe somewhat paler; all these parts black-haired. 

 Palpi and legs are rather lighter than cephalothorax and abdomen, of a 

 dull yellowish-brown color, paler on the under part, provided with black 

 hairs and spines; tlie apex of the pali)i is piceous. Abdomen dull 

 brown, clothed with grayish or reddish-brown and black hair, densely 

 strewed with small black spots and points, especially on the back and 

 on the sides ; on the back, toward the sides, these spots form several 

 oblique rows, which, however, are neither regular nor very conspicuous ; 

 along the middle of the fore part is a slightly i)aler band or line, reach- 

 ing to the middle of the back. The anterior, more elevated part of the 

 vulva is rusty-brown; the posterior, tongue-shaped portion dark brown, 

 at least sometimes marked with two paler longitudinal lines. 



Length of body 11, of cephalothorax 4f millim. ; breadth of cephaloth. 

 3^, of forehead (clypeus) nearly 2 millim. Length of legs: I lOf, II 10, 

 III 91, IV 12i millim ; patella + tibia IV 3| millim. Length of mandi- 

 bles If millim. 



Of this species, one female was captured at Kelso Cabin, Colo., July 6, 

 and another on Gray's Peak, 11-12,000 feet above the level of the sea, 

 July 7. A third, smaller female example, in which the hind portion of 

 the vulva is destitute of the two pale lines seen in the other specimens, 

 was found in Idaho, July 5. The species is also met with in the Eastern 

 States. I possess a female example, captured on Mount Lebanon, Mass., 

 and presented to me by my kind friend Mr. G. Eisen, Docens of zoology 

 in the University of Upsala, to whom I am also indebted for a great 

 many other North American, especially Californian, spiders. 



11. G. scudderi n. 



Cephalothorax longer thau patella -f tibia of the fourth pair, dark 

 with a narrow black margin, and covered with grayish or somewhat 

 brown, reddish-brown hair; fore row of eyes curved moderately down- 

 ward ; fore lateral eyes double as large as fore centrals; central eyes form 

 ing a rectangle, much longer than broad ; legs brownish-black, paler at 

 the base ; tibiie of first pair armed with 2., of second pair with at least 

 2. 1. 1. spines below; abdomen dark brown, covered with grayish or red- 

 dish-brown hair ; vulva consisting of a rhomboidal fovea, the anterior 

 margin of which is produced backward as an obtuse process, and which 

 has a large oblong fovea on each side between the margin and the lam- 

 ina, which forms the floor of the vulva. — 9 ad. Length about llf millim. 



Female. — In general form, this spider is very similar to the preceding 

 species, G. conspersa. The pars cephalica of the cephalothorax is only a 

 little more equably and strongly rounded in the sides ; in other particu- 

 lars, cephalothorax, sternum, maxilla', labium, and palpi are as we have 

 described these parts in G. conspema. The eyesjiave, the same relative 

 20 HB 



