122 Journal New York Entomological Society. [Voi. xvn. 



pedia are present for the anterior pair of legs. Lamellar hairs straight and pectinate, 

 three fourths as long as the lamellfE ; hair of lateral lamella strongly curved and pec- 

 tinate on outer margin, slightly shorter than the lamellar hairs ; interlaniellar hairs 

 long, slightly curved and pectinate, slightly longer than lamellar hairs. Pseudostig- 

 matic organs short, subcapitate. 



Abdomen about four fifths as broad as long ; pteromorphse truncate anteriorly and 

 not extending beyond the anterior margin of abdomen. Dorsum with several short, 

 stiff, straight bristles. Genital covers smaller than the anal covers and situated about 

 one and one half times their length in front of the latter ; anal covers broadest at their 

 posterior ends and situated about one half their length from the posterior margin of 

 the ventral plate. 



Anterior pair of legs three fifths as long as the body. The tibiae and genuals of 

 legs I and II each bear on their outer sides a large, stout, pectinate spine or bristle. 

 Ungues tridactyle ; dactyles unequal. 



Length, 0.70 mm.; breadth, 0.50 mm. 



Under a log. Collected by the writer at Urbana, 111. A single 

 specimen. 



Oribata helvina, new species (Plate III, Figs. 12 and 13.) 



Light yellow. 



Cephalothorax two thirds as broad as long; lamell?e narrow, of uniform width, 

 about two thirds as long as cephalothorax ; no translamella. Lamellar hairs straight, 

 as long as the lamellce ; interlamellar hairs equal to lamellar hairs ; anterior lateral 

 bristles two thirds as long as the lamellar hairs, pectinate, strongly curved and ex- 

 tending one half their length beyond the tip of the rostrum. Pseudostigmatic organs 

 large, clavate and barbed on the anterior margin, posterior margin without barbs. 

 The pseudostigmatic organs are as long as the lamellae. 



Abdomen two thirds as broad as long. Pteromorphas one half as long as abdo- 

 men, truncate anteriorly and not extending beyond the anterior margin of abdomen. 

 Genital covers small, two thirds as long as the anal covers and situated twice their 

 length in front of the latter. Anal covers situated almost approximate to the pos- 

 terior margin of abdomen. Abdomen hairless. 



Legs subequal ; anterior pair two thirds as long as the body ; tarsus and tibia 

 subequal ; genual one half as long as tibia. Ungues tridactyle ; dactyles unequal. 



Length, 0.38 mm.; breadth, 0.22 mm. 



From dead leaves. Collected by the writer at Urbana, Illinois. 

 Three specimens. 



Oribata enodis, new species. (Plate I\", Fig. 14.) 



Light brown ; integument of medium thickness ; surface smooth. 

 Cephalothorax about one third as long as abdomen ; lamellae long and narrow, 

 about three fifths as long as the cephalothorax, anterior end free and bearing a large, 

 pectinate bristle about two thirds as long as the lamella itself. There is a pair of 

 lateral lamellae which are slightly longer than the median lamellse and are curved an- 

 teriorly towards the median plane. Interlamellar hairs similar to lamellar hairs but 



