1919] Chamber! in: Western Spiders 241 



straight; median eyes decidedly smaller than laterals, scarcely their 

 diameter from the laterals, one half their diameter from each other and 

 about the same distance, or slightly farther, from the lower edge of 

 clypeus. Posterior row of eyes straight; median eyes obviously larger 

 than the anterior medians, once and a quarter or scarcely more their 

 diameter apart and near the same distance from the laterals; posterior 

 laterals equal to the anterior laterals. Area of median eyes a little 

 wider behind than in front. In front view the inner edges of the 

 cheliceras are obviously curved ectad over most of their length, as shown 

 in Plate XIV, Fig. 3; Epigynum as show^n in Plate XIV, Fig. 4. 



Male — Chelicerag with a low rounded tubercle or tooth at exterior 

 angle of base. Palpus with tibial apophysis short, but rather stout. 

 Cf. Plate XIV, Fig. 5. 



Type— M. C. Z. 405. XIV, Utah: Uintah Mts.; Chalk Creek, 

 elevation, 7,500 ft. Webs on boughs of pine trees. 



Resembles siiblata. The latter, among other diflferences, 

 has the eyes of the anterior row obviously more nearh' 

 equidistant and the form of the epigynum different. 



Dictyna coloradensis sp. nov. 



Female — This species has to some extent been identified with 

 D. arundinaceoides Keys, but is not that species, which seems to be 

 really the D. sublata of Hentz. Carapace and sternum fuscous. Legs 

 yellowish or pale brown, without distinct markings or often with femora 

 darkened and tibiae and metatarsi annulate at distal end and with less 

 distinct annuli toward proximal end. Abdomen above with the usual 

 triangular mark at base ; behind this two rows of annular markings more 

 or less connected by dark lines or chevrons between them. Anterior 

 row of eyes straight; median eyes a little smaller, separated by about 

 their diameter, very slightly closer to laterals. Clypeus rather low, 

 the heigh,t being between once and a half and twice the diaineter of an 

 anterior median eye. 



Posterior row of eyes straight; eyes equidistant. Area of median 

 eyes wider behind than in front. Epigynum shown in Plate XIV, Fig. 7. 



Male — -Darker than the female. Femora darkened and a distinct 

 dark annulus at distal end of tibise and metatarsi and a less distinct 

 one proximally, or legs sometimes lacking these dark markings. Clypeus 

 much higher than in the female and median eyes smaller. Chelicerae 

 dentate at base toward ectal side as shown in Plate XIV, Fig. G. 

 Process of tibia of palpus stout, of moderate length, distallv bi-dentate. 

 Cf. Plate XIV, Fig. S. 



Length of female up to 3.5 mm. 



Type — M. C. Z. 395. Colorado: Colorado Springs (R. V. 

 Chamberlin, coll.); Eldora; Pagosa Springs; Fort Collins, etc. 

 New Mexico: Beulah; Mesilla. 



