136 ENTOMOLOGICAL SOCIETY 
Specimens taken from a tumor under the wing of a cross- 
bill at Washington, D. C., by Dr. A. K. Fisher. Readily 
separated from the European species by the much longer 
bristles on legs iii and iv. The adult and larvae have been 
figured in my "Treatise on Mites," p. 20. 
C&culus clavatus n. sp. 
Yellow-brown, legs dark brown, tarsi iii and iv black. Body with a 
median shield on front part, the posterior shields less distinct. The hard 
parts are roughened, and behind are the clavate hairs as in C. americanus; 
in front the cephalothorax has a clavate hair each side, which is longer 
than the clavate hair on trochaner i. Legs of the size and roughened 
as in C. americanus, all with short curved white clavate hairs, mostly 
in rows; on leg i, however, there are spines on inner side of femur, tibiai 
and metatarsus, each upon an elevation; two on femur with clavate 
tips, two on tibia barely pointed at tips, and three on metatarsus with 
acute tips; on the outer side below are three similar spines; one on 
the tibia, and two on the metatarsus. On leg ii on the outer side below 
are also three of these spines; one on tibia, and two on metatarsus 
Length i. mm. 
Taken among dead leaves, near Washington, D. C. Differs 
from C. americanus in number of spines on leg i, and in that 
several have clavate tips. 
Oribata angustipes n. sp. 
Body dark red-brown, legs yellowish. Abdomen subglobose, above 
with a submedian row each side of eight short, curved bristles, seen 
under high power these are finely serrate; a pair of similar bristles on 
base of cephalothorax; pseudostigmatic organ simple, very long and 
fine, its tip wavy; two pairs of simple bristles on cephalothorax in front. 
Legs very slender; anterior femora nearly as long as width of body; 
all with a few hairs, the tibiae with a longer bristle at tip, and a very 
long one on each hind femur; genital and anal apertures touching. One 
claw to each tarsus. 
Length .6 mm. 
Taken near Mt. Vernon, Virginia, among dead leaves. It 
is near 0. nodipes Koch, but has longer bristles on femur iv, 
the tibia iv is longer, and the hairs on abdomen are thicker. 
I have figured it on page 69 of my "Treatise on Acarina" 
under the name of 0. gracilipes, which name I now find is 
preoccupied. 
Liponyssus americanus n. sp. 
Very pale yellowish. Body rather elliptical, but truncate at tip, and 
slightly pointed in front. Surface minutely and obliquely striate. Dor- 
sum with a broad elongate shield, broadest before middle near shoulders, 
