244 An7ials Entomological Society of America [Vol. XII, 



Genotype — D. arizonensis sp. nov. 



Includes also Lathy s trivittata Bks., known from New 

 Mexico. The genus differs from Lathy s in its inclined endites 

 and much higher clypeus, and from Dictyna in its shorter 

 labium and lower, less convex, pars cephalica. 



Dictynoides arizonensis sp. nov. 



Female — Carapace rufous brown along each side, the median and 

 a marginal stripe on each side paler; along the pars cephalica and 

 converging caudad are three bands of white hair as in trivittata. Sternum 

 dusky yellow to nearly black. Legs yellow, not annulate. Abdomen 

 pale with some darker spots above; clothed with white hair. Anterior 

 row of eyes straight; eyes equidistant or the medians a little farther 

 from each other than from the laterals; the medians smaller than the 

 laterals. Height of clypeus more than twice the diameter of the anterior 

 median eyes, slanting conspicuously forward from above below. Posterior 

 row of eyes straight or nearly so, eyes equal in size and obviously larger 

 than the anterior median, nearly equidistant, the medians slightly 

 farther apart than from the laterals. Area of median eyes wider behind 

 than long (cir. 12:10) and obviously wider behind than in front, the 

 anterior width being equal to the length. Epigynum as shown in 

 Plate XVI, Fig. 1. 



Length, 5 mm. Length of tib. + pat. I, 2.8 mm.; tib. + pat. IV, 

 LS mm. 



Type— M. C. Z. 393. Arizona: Huachuca Mts. ; Miller 

 Canyon, elevation 5,(500 ft. (W. M. Wheeler, 17th Nov., 1910). 



ULOBORIDyE. 



Uloborus utahensis sp. nov. 



The types of this species, which arc not quite fully mature females, 

 seem readily distinguishable by pronounced differences in coloration in 

 connection with structural features. Carapace and sternum black or 

 nearly so, with the usual clothing of white hair. Leg I with femur 

 and patella entirely black, the tibia black, excepting a narrow ring at 

 proximal end, and the inetatarsus with a narrow black annulus at each 

 end and two broader ones in the intervening region, the tarsus dark 

 except at ends. Leg II has the femur black throughout, with no narrow 

 pale inedian annulus; metatarsus with two broad dark annuli or these 

 indistinctly separated, each close to its end of the joint. Femur III 

 black, with one pale annulus distad of middle and one less distinct 

 at proximal end; tibia with a pale annulus at proximal end and a sub- 

 median one; metatarsus pale at proximal end and at middle. Leg IV 

 with femus having two pale annuli of which the more proximal is com- 

 monly incomplete below; the other joints as in leg III. The abdomen 

 somewhat elongated, without any distinct humps above; dark, being 

 covered with a dense network of black lines, a brow^n median longi- 



