Dec., '08] ENTOMOLOGICAL NEWS. 45! 



covers slightly convex, genital covers each with a few very minute 

 hairs. 



Anterior pair of legs equal in length to the cephalothorax, some- 

 what stouter than the others; tarsus of leg I fully one and one-half 

 times as long as the tibia. All the legs are well clothed with rather 

 long, simple bristles Unguis tridactyle. Length, 0.78 mm ; height, 

 0.42 mm. 



In moss. Collected by H. Glasgow at Urbana, Illinois. One 

 specimen. 



Phthiracarus rotundas n. sp. 



Brown ; integument granulate. Cephalothorax, fully one-half as 

 long as the abdomen and about one-half as high as long. There is a 

 small chitinous ridge around the ventral edge of the cephalothorax; 

 this ridge projects forwards and laterally about as far as the width of 

 one of the dactyles of tarsus I. The cephalothorax bears two pairs of 

 very fine hairs, those of the anterior pair being shorter than those of 



Fig. 2. Phithiracarus rotundus n. sp., side view, x 80. 



the posterior pair. Pseudostigmata round, disk-like; in diameter each 

 equal to the width of tibia I ; pseudostigmatic organ about twice as 

 long as the diameter of the pseudostigma. Palpi very prominent. 



Abdomen almost as high as long ; the upper half of the anterior 

 margin concave, the lower half of the anterior margin straight. The 

 posterior part of the abdomen is rounded; ventral margin of abdomen 

 convex. The abdomen bears about twelve pairs of small hairs on the 

 dorsal aspect. 



Legs about as long as cephalothorax ; all subcqual ; tarsus longer 

 than tibia ; unguis large and stout, almost as long as the tarsus, from 

 which it extends, and tridactyle, dactyles equal. Length, 0.76 mm ; 

 height, 0.52 mm. 



Under a log. Collected by tbe writer near Batavia, 111. 



