72 Trans. Acad. Sci. of St. Louis. 



The tarsal pedicels of the caruncles increase in length as you go back- 

 ward from the anterior legs. 



Length, 0.46 mm.; breadth, 0.28 mm. 



No habitat recorded. Collected by the writer at Ma- 

 homet, 111. 



Uroseius Berlese. 



No sculptures on the ventral surface of the body for the reception of 

 the legs; leg I without claws; body without ventral plate; legs without 

 scale-like hairs. 



One species. 



Uroseius badius n. sp. 



PL XI. f. 35. 



Dark reddish brown; integument rough. 



Mouth part of moderate size; palpi over half as long as the anterior 

 pair of legs; epistoma broad, quadrate, with a row of six sharp, short 

 teeth on the anterior margin. 



Body about three-fifths as broad as long, broad and uniformly rounded 

 behind, narrowed anteriorly and truncate above the epistoma. Dorsal 

 shield extending over the greater part of the upper surface of the body 

 but there is a long chitinous strip on each side of the dorsal shield. 

 Dorsum very sparsely clothed with short bristles. Sternum angulate 

 anteriorly; female genital plate extending from betv/een the coxas of the 

 last pair of legs to between the coxae of the second pair of legs and 

 ending anteriorly in a shady chitinous point. Anus situated about its 

 width from the posterior margin of the abdomen. 



Anterior pair of legs not more than one-third as long as the body; 

 tarsus of leg I equal in length to the tibia and genual combined and 

 ending distally in two tactile hairs, the outer of which is as long as the 

 segment itself, the inner about half as long. The inner margin of the 

 tarsus of leg I is hairless, while on the outer margin near the end is 

 a tuft of hairs. Second pair of legs slightly stouter than the rest; last 

 pair not extending to the posterior end of the body. Last three pairs 

 of legs with stout claws. 



Length, 1.04 mm.; breadth, 0.78 mm. 



Under bark on a rotten cottonwood log. Collected by J. 

 D. Hood at Urbana, 111. Described from two well-pre- 

 served females. 



DiNYCHUS Kramer. 



Without sculptures on the ventral surface of the body for the recep- 

 tion of the legs; leg I with claws; dorsal plate entire and fused to the 

 ventral plate; peritreme sinuate; cox* of the anterior pair of legs 

 contiguous. 



One species. 



