248 Annals E7itomoJogical Society of America [Vol. XII, 



LINYPHIIDAE. 



Linyphia latescens sp. nov. 



Female — Dusky yellow, darker at margin, the eyes edged with 

 black. Legs also yellow, the femora and patelte dusky, the tibiae with 

 a broad annulus proximad of middle and a narrower, deeper one at 

 distal end, the metatarsi also similarly annulate. Sternum blackish. 

 Abdomen grey, with abdomen crossed, excepting at anterior end, by a 

 series of heavy blackish chevron marks connected by a more obscure 

 median longitudinal dark line'; sides dusky. Posterior row of eyes 

 straight, the median eyes a little less than their diameter from the 

 laterals, nearer to each other. Anterior row of eyes a little procurved, 

 the medians much smaller than the laterals, less than their diameter 

 apart, obviously more than their diameter from the laterals. Area of 

 median eyes as long as wide or very slightly longer. 



Male — Coloration as, in female. Palpus as shown in Plate XVII, 

 Fig. 3. Embolus coiled in a circle at distal end. 



Length of female, 2.2 mm. Length of cephalo thorax, .9 mm. 

 Length of tib. + pat. I, 1.3G mm.; of tib. + pat. IV, 1.25 mm. 



Type— M. C. Z. 429. Utah: Uintah Mts. ; Chalk Creek. 



Linyphia orinoma sp. nov. 



Female — Carapace, legs, chelicerse and endites yellow, without 

 markings. Sternum and labium dusky or blackish, the color of the 

 former appearing denser toward edges. Abdomen greyish yellow, with 

 a few scattered small silvery dots and sometimes a dusky area at base 

 of spinnerets on each side and occasionally also a dusky area in front of 

 this; with no trace of dorsal dark markings, such as occur in insignis. 

 Posterior row of eyes straight, the median eyes slightly nearer to each 

 other than to the laterals, separated by their diameter or a little more. 

 Anterior row of eyes straight; median eyes smaller than the laterals, 

 their radius or less apart, nearly their diameter from the laterals. The 

 epigynum projects in a straight, finger-like process, which is a little 

 clavately expanded distad and is rounded at the end, where it has 

 openings closer together than those of insignis; the dorsal surface just 

 proximad of the tip having a deep lunate impression with concavity 

 caudad, the form and position of this impression differing strongly 

 from that of insignis. (Plate XVII, Fig. 4). 



Length, 3.25 mm. Length of tib. + pat. I, 2.2 mm. 



Type— M. C. Z. 427. Utah: Millard County; Clear Lake. 

 Also a not fully matured specimen in Uintah Mts. on Chalk 

 Creek. 



Evidently close to insignis from which distinguished by the 

 uniform presence of silver-colored spots on the abdomen, 

 with absence of dorsal markings and particularly by the detailed 

 structure of the epigynum. 



