PSYCHE. 

 NEW SPECIES OF THE GENUS ORIBATA.— PLATE III. 



BY H. E. EWIXG, URBAXA, ILLINOIS. 



The genus Oribata is the richest in numbers of any of the American genera of 

 the Oribatidae or "beetle mites." Four new species are described in the present 

 paper. Type specimens have been deposited in the IlUnois State Laboratory of 

 Natural History. 



Oribata badia n. sp. 

 (Figs. 1, 2, 3.) 



Chestnut brown; integument granuhite. 



Cephalothorax three-fifths as long as abdomen; lamellae long and narrow, two 

 thirds as long as the cephalothorax and of almost uniform width; lateral lamellae 

 very small. There is a pair of tectopedia for the first pair of legs. Lamellar hairs 

 about as long as the lamellae, straight, pectinate and directed forwards; anterior 

 lateral hairs three-fifths as long as the lamellar hairs and slightly curved. Pseudo- 

 stigmatic organ almost as long as femur of leg I, recurved, with pointed, clavate 

 head. The palpi may often be seen from above extending out from under the 

 rostrum. 



Abdomen almost as broad as long; ptermorphae attached to the anterior half 

 of the abdomen, truncate and not extending beyond the anterior margin of the same; 

 anterior free margin of pteromorphae straight. Genital covers each almost twice as 

 long as broad, and much broader at the posterior than at the anterior end, and sit- 

 uated approximate to the anterior margin of ventral plate; anal covers much larger 

 than genital covers, almost rectangular in shape and situated approximate to the 

 posterior margin of the ventral plate and more than their length from the genital 

 covers. Abdomen hairless. 



Anterior pair of legs about as long as abdomen; tarsus and tibia subequal, 

 genual one-half as long as tibia, femur one and one-half times as long as tibia. All 

 the legs are well clothed with stout, curved bristles. Unguis tridactyle; dactyles 

 unequal. 



Length, 0.55 mm.; breadth, 0.38 mm. 



Under rubbish. Collected by the writer at Urbana, Illinois. A few specimens. 



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