60 Trans. Acad. Sci. of St. Louis. 



of palpus one-half as broad as long; second segment of palpus the long- 

 est and broadest. Mandibles one-half as long as the palpi. Dorsal groove 

 extending backward slightly beyond the level of the eyes. Two pairs of 

 eyes present, the larger, posterior pair, situated one-half the distance 

 from the dorsal groove to the lateral margin of the cephalothorax; just 

 in front and lateral to this pair of eyes is a much smaller pair of eyes. 



Abdomen two-thirds as broad as long, broadest at the insertion of 

 the third pair of legs. Body rather sparsely clothed with short, feather- 

 like hairs. 



Anterior pair of legs one and a third times as long as the body; tarsus 

 swollen, two thirds as long as the tibia; tibia narrower but equal in 

 length to the antepenultimate segment. Second pair of legs slightly over 

 two-thirds as long as the anterior pair; third pair slightly longer than 

 the second. Last pair of legs almost as long as the first pair; tarsus 

 swollen, about two-thirds as broad as long and one-third as long as the 

 tibia; tibia longer and narrower than the antepenultimate segment. 



Length, 0.80 mm.; breadth, 0.52 mm. 



In grass. Collected by C. A. Hart at Hillery, 111., and by 

 the writer at Muncie, 111. Described from two specimens. 



Rbyncliolophus leprosus n. sp. 



PI. IX. f. 12. 



Yellow; body with many small black spots. 



Cephalothorax cone-shaped, one-half as broad as the abdomen. Mandi- 

 bles stout, about one-third as long as the anterior pair of legs; palpi 

 equal to the mandibles in length; thumb and claw both short. Dorsal 

 groove rather short, extending about one-fourth its length beyond the 

 eyes; expanded at the posterior end, at the anterior end continuous with 

 a small triangular elevation upon which are situated six straight, slightly 

 pectinate bristles, the two largest consisting of a pair situated near the 

 posterior margin of the elevation; toward the middle of the elevation is 

 situated a similar but smaller pair; just in front and just behind this 

 pair is situated a single median bristle. A single pair of eyes present, 

 rather large, situated two-thirds the distance from the dorsal groove to 

 the lateral margin. 



Abdomen three-fifths as broad as long, broadly rounded behind and 

 enlarged in front of the third pair of legs, moderately well clothed with 

 small barbed hairs. The last two pairs of legs situated about the middle 

 of the ventral surface of the abdomen. 



Anterior pair of legs longer than the body; tarsus swollen, about 

 three-fourths as long as the tibia. Second and third pair of legs sub- 

 equal. Last pair of legs extending more than one-half their length 

 beyond the posterior margin of the abdomen; tarsus of leg IV about 

 one-third as long as the tibia; tibia longer but narrower than the ante- 

 penultimate segment. 



Length, 0.98 mm. ; breadth, 0.64 mm. 



Found running over garden plants. Collected by the 

 writer at Areola, 111. 



