THE CANADIAN ENTOMOLOGIST 125 



inner margin near the base, and three or four short bristles on its outer 

 margin ; segment four with a superior and a lateral bristle ; distal segment 

 with two very large terminal bristles, the outer of which is the longest, 

 being equal to the total length of the palpus, the inner being about three- 

 fourths as long, three other bristles on the distal segment, two on the outer 

 margin near the distal end, and one near the inner margin about one-third 

 the distance from the distal to the proximal end. Two pairs of eyes 

 present, situated close together at the posterolateral aspect of the cephalo- 

 thorax. 



Abdomen about one-half as broad as long, with a pair of small 

 shoulder bristles and two pairs of subequal posterior marginal bristles. 



Anterior pair of legs about one and one-half times as long as the 

 beak. The two posterior pairs of legs are longer than the two anterior pairs 

 of legs. Tarsus of leg i one and one-half times as long as the tibia; claws 

 and caroncle of tarsus stout. 



Length, 0.85 mm.; breadth, 0.60 mm. 



In moss. Collected by the writer at Muncie, 111. 



Bdella depressa, n.sp. (Plate vi, fig. 7). — Cephalothorax, not including 

 the beak, about one-half as long as the abdomen ; beak two-thirds as long 

 as the abdomen. Palpi surpassing the beak ; segment two almost as long 

 as the beak ; segment three twice as long and almost twice as thick as 

 segment four ; distal segment equal to segment three in length, but only 

 as broad as segment three at its distal end, which is much broader than 

 the proximal end. Distal tactile bristles of the end segment almost equal, 

 being about as long as the total length of the palpus. A double pair of 

 eyes present ; situated at the postero-lateral aspect of the dorsal surface of 

 cephalothorax about their width from the cephalothoracic abdominal 

 suture. 



Abdomen twice as long as high; very sparsely clothed with simple, 

 stiff, short bristles, which are slightly longer towards the posterior margin. 



Anterior pair of legs as long as abdomen ; tarsus of leg 1 longer than 

 the tibia ; claws and caroncle stout, situated on a pedicel as long as the 

 thickness of the tarsus. Legs clothed with simple bristles, which are 

 longer towards the distal end of the leg. 



Length, 0.70 mm.; breadth, 0.50 mm. 



Under bark. Collected by the writer at Areola, 111. 



