AMERICAN APTERA. 405 



rows of four bristles each ; two bristles on each lateral margin ; and 

 two pairs of bristles on the posterior margin, those of the outer pair 

 being the largest. 



Legs short ; anterior pair about three-fifths as long as the body ; 

 second pair of legs three-fourths as long as anterior pair ; third pair 

 of legs equal to second pair ; last pair of legs subequal to the anterior 

 pair. All the legs are sparsely clothed with stout, slightly curved 

 spines ; tarsus and tibia of leg one each with a rather long tactile 

 bristle. Tarsi with stout claws about one-third as long as the tarsal 

 segments. 



Length, 0.46 mm.; breadth, 0.32 mm. 



In moss. Collected by the writer at Mahomet, Illinois. 

 Four specimens. 



Gen. NEOPHYLLOBIUS Berlese. 



Cephalothorax without tubercles at the anterior margin ; 

 body broad, short, and bearing very large bristles ; all the 

 legs much longer than the body. 



A single species. 



Neophyllobius harti n. sp.* 

 (Plate XIV., Fig. 7.) 



Body brownish red blotched with patches of black ; legs and palpi 

 pale red ; integuments finely striated. 



There is apparently no division between the cephalothorax and the 

 abdomen. From the anterior part of the body projects a shelf-like 

 expansion which partially concels the mouthparts ; this may be called 

 the epistoma. The epistoma is about three-fifths as broad as long, 

 being broadest at the base and oval in front. The mandibles project 

 slightly beyond the epistoma ; palpi one and one-half times as long as 

 the epistoma and extending beyond the mandibles. Each palpus ends 

 in a stout claw and has also a thumb, which is about as long as the 

 palpal claw. Each palpus bears about a half dozen bristles of varying 

 length. 



Body oval ; two-thirds as broad as long and bearing about two 

 dozen large, stout plumose spines, each of which is situated upon a 

 small tubercle. From the anterior margin of the body extend two 

 bristles, one along either side of the epistoma and equal to it in length ; 

 six bristles are situated at the posterior margin of the body. 



Legs very long ; anterior pair twice as long as the body ; second pair 

 of legs about one-half as long as the anterior pair ; third pair two-thirds 



* Named in honor of C. A. Hart, systematic entomologist of the 

 Illinois State Laboratory of Natural History. 



TRANS. AM. ENT. SOC . , XXXV. NOVEMBER, 1909. 



