Ewing — New North American Acarina. 59 



Abdomen three-fifths as broad as long, broadly rounded behind; pos- 

 terior group of legs situated about the middle. 



Anterior pair of legs about a third longer than the body; tarsus 

 slightly swollen and subequal to the tibia; tibia shorter than the ante- 

 penultimate segment. Second and third pair of legs subequal; last 

 pair of legs extending about two-thirds their length beyond the posterior 

 end of the body; tarsus of leg IV swollen, about one-half as long as the 

 tibia; tibia thickly clothed with a row of subequal bristles resembling 

 a comb; tibia and antepenultimate segment subequal. 



Length, 0.90 mm.; breadth, 0.60 mm. 



On a maple log. Collected by J. D. Hood at Urbana, III. 

 Described from two well-preserved specimens. 



Rbyiicbolopbus qujidiioculus n. sp. 



PL VIII. f. 8-9. 



Extremely variable in color, many of the smaller specimens light yel- 

 low or greenish, while most of the larger ones are red. In some of the 

 larger specimens, the anterior legs, the tarsi of the second and the third 

 pairs and the four distal segments of the last pair of legs are red, the 

 remaining segments of the last three pairs of legs being almost colorless. 



Palpi extending to about the middle of the third segment of the 

 anterior pair of legs; palpal claw slender, curved downward; thumb 

 small and slender, not extending to the tip of the palpal claw; second 

 segment of palpus longer and broader than the third. Mandibles less 

 than one-half as long as the palpi. Dorsal groove short, scarcely extend- 

 ing to the level of the eyes, expanded behind where is situated a pair 

 of long bristles equal to the dorsal groove in length; anterior tubercle 

 bearing six long subequal bristles. Two pairs of eyes present; situated 

 laterally, the more lateral pair being much the smaller. 



Body oval; two-thirds as broad as long, uniformly rounded behind. 



Anterior pair of legs longer than the body; tarsus slightly swollen 

 and tv/o-thirds as long as the tibia; tibia subequal in length but nar- 

 rower than its preceding segment. Second and third pairs of legs 

 shorter than the rest, the second pair being the shortest. Hind pair 

 of legs equal to the body in length; tarsus swollen, one-half as long as 

 the tibia; tibia longer and narrower than its preceding segment. 



Length, 0.86 mm.; breadth, 0.50 mm. 



In grass. Very abundant in the vicinity of Areola, 111., 

 during the autumn months. Described from many 

 specimens. 



Rliynclioloplius brovitarsu.s n. sp. 



PL IX. f. 10-11. 



Color variable; body usually almost black; legs red. the second and 



third pairs usually lighter. 



Palpi about one-third as long as the anterior pair of legs; palpal claw 

 strongly curved inward; thumb one-third as broad as long, not swollen 

 and not extending to the tip of the palpal claw; penultimate segment 



