THE CANADIAN ENTOMOLOGIST 



199 



Fig. 22. 1. Calabrithorax clypiellus, sp. n., ventral view of left male palpus. xlOO. 2. Distoectal view of right 

 male palpus. .xlOO. .3. Dorsal view of left male palpus. xlOO. 6. Anyphaena inter monlana, sp. n., 

 epigynum. x44. 



characters as height of clypeus, etc., are so marked, indicates the importance 

 of the palpal organ in generic distinctions in this group. 



Catabrithorax clypiellus, sp. nov. 



ikfa/e.^Carapace light dusky yellow. Legs yellow. Abdomen light gray. 

 Remarkable for the extremely low clypeus, the height of which is less than the 

 diameter of the lateral eye and does not exceed that of the smaller medians. 

 Anterior row of eyes straight or rather slightly recurved, eyes close together, 

 separated by less than the radius of the median eyes; median eyes smaller than 

 the laterals. Posterior row of eyes straight; eyes equal and equidistant, less 

 than a diameter apart. Area of median eyes as wide as, or very slightly wider 

 than, long, clearly wider behind than in front (ratio about 4: 3). Upper margin 

 of furrow of chelicera armed with four teeth, the lower margin with a series ol 

 five or six smaller teeth. Sternum broad, shield-shaped, produced between 

 posterior coxae, posteriorly truncate, strongly convex. Labium very short and 

 broad, distally truncate, not narrowed. Cephalothorax unusually broad and 

 low, the lateral margins widely convex, the anterior end broad, the eye region 

 a little protruding over the clypeus. In the male palpus the tibia presents 

 above a chitinous apophysis which distally curves first outward and then distad. 

 Paracymbium and embolus as shown in Fig. 22, 1, 2 and 3. 



Length L63 mm. Length of cephalothorax .66 mm.; width .58 mm. 

 Length of tib. + pat. I\' nearly equalling width of cephalothorax, the length of 

 tib. + pat. I less than the width of cephalothorax. 



Locality. — Utah: Logan Canyon. One male. 



