Ewing — New North American Acarina. 61 
Rhyncholophus parvipollicus n. sp. 
fs RD, Bb Ae FB \ 
Body bright red; anterior pair of legs, the two proximal segments of 
the second and third pairs of legs and all the segments of the last pair 
of legs except the two distal, bright red; the four distal segments of the 
second and third pairs of legs and the two distal segments of the last 
pair of legs colorless. 
Mandibles two-thirds as long as the palpi; distal segment of palpus 
including its claw a little over one-half as long as the penultimate seg- 
ment; thumb small, extending to the end of the palpal claw and bearing 
at its end a tuft of long bristles; penultimate segment of palpus twice 
as long as broad. Dorsal groove of cephalothorax extending behind the 
eyes, swollen at its posterior end and at its anterior end continuous 
with a triangular tubercle which bears two pairs of bristles, the pos- 
terior of which is the smaller. A single pair of small eyes present, situ- 
ated about two-thirds the distance from the dorsal groove to the lateral 
margin. | . 
Body moderately well clothed with barbed hairs; abdomen broadest 
at the insertion of the third pair of legs. Posterior group of legs situ- 
ated about two-thirds the distance from the anterior to the posterior 
end of the body. 
Anterior pair of legs one and a half times as long as the body; tarsus 
of leg I but slightly swollen and less than the tibia in length; tibia 
about four-fifths as long as the antepenultimate segment. Second pair 
of legs very short, but over one-half as long as the anterior pair of legs; 
third pair of legs longer than the second. Hind pair of legs about 
equal to the anterior pair; tarsus about one-third as long as the tibia; 
tibia longer but narrower than the antepenultimate segment. 
Length, 1.00 mm.; breadth, 0.64 mm. 
Found in grass. Collected by the writer at Arcola, III. 
SMARIS Latreille. 
Mouth parts very retractile, when drawn in, invisible; dorsal groove 
not swollen in the middle; an extra pair of eyes sometimes present on 
the anterior margin of the body. 
One species. 
Smaris longilinealis n. sp. 
Pi, 4A. Ff 14. 
Bright red; legs and mouth parts paler. Integument irregularly 
striated and bearing short, swollen, barbed sete. 
Mouth parts very small. Palpi weak, scarcely equal to the second 
segment of leg I; thumb small not swollen, equal to the palpal claw in 
length; penultimate segment equal in width to the second segment but 
shorter. Mandibles three-fifths as long as the palpi and bearing promi- 
nent hairs. Mouth parts borne upon a protrudable unsegmented stalk 
which when extended is equal to one-half the length of the anterior. pair 
of legs. Dorsal groove extending over one-half of its length beyond the 
