PSYCHE 
NEW OKIBATIDAE. 
BY H. E. EWIXG, URBAXA, ILLINOIS. 
The present paper describes seven new .species of Oribatidae, including a species 
of Pelops, the first of its genus to be describe^ from this countn.'. T\-pe specimens 
have been deposited in the Illinob State I.aboratoiA' of Natural HLston.-. 
Pelops americanus n. sp. 
Figs. 2, 3, 4. 
Dark brown; integument of medium thickness and covered with small pits. 
The cephalothorax is about one-third as long as the abdomen. A long process, 
one-half as broad as long, extends from the anterior margin of the abdomen to Ix-vond 
the tip of the rostrum. A pair of large, spatulate, serrate bri.stles is situated on the 
posterior dorsal part of the cephalothorax; they project almost to the tip of the 
rostrum and diverge from the median plane. Lamellae situated laterally; about 
one-half as long as the cephalothorax, cun'ing toward the median plane and ending 
in a sharp jxiint, from which extends a simple, cureed, bristle almost as long as the 
lamella itself. 
Abdomen about as broad as long. Two pairs of short spatulate bristles are 
situated on the posterior margin near the median plane. The inner and uppier two 
incline slightly toward the median plane. The outer and lower two incline markedly 
away from the median plane. There are two pairs of similar dorsal bristles and a 
lateral pair of bri.stles situated about half way from the anterior to the posterior 
maigin of the abdomen. Pteromorphae large, about four-fifths as long as the abdo- 
men and extending forward to about the middle of the cephalothorax. Genital 
covers laiger than the anal covers and situated about their length in front of the latter. 
Anal covers situated one and one-half times their length from the posterior mai^n of 
the abdomen and two-thirds their length from the posterior margin of the ventral plate. 
Legs rather small; unguis tridactyle; tibia and tarsus of leg I\ subequal. 
Length, 0.60 mm.; breadth, 0.4.5 mm. 
In moss. Collected by myself at Bata\ia, III. One specimen. 
