1947] 
Acarina from North Carolina 
113 
opening is mostly in front of hind trochanter, bilobed 
behind, almost as long as broad and fully twice its length 
in front of the smaller, nearly circular anal opening, 
which is nearly its length in front of the hind margin of 
venter. 
The legs are very slender and short, with few hairs 
except on the tarsi. 
Length .22 mm. 
From the Duke Forest, Durham, North Carolina, 2 
Dec. (Pearse). Type M.C.Z. Arachn. 3021. 
Alloribates gen. nov. 
Goes in the Ceratozetinae, related to Ceratozetes and 
Peloribates but differs in the structure of the front tarsi. 
The anterior border of the abdomen bulges forward over 
the hind part of the cephalo thorax so that the origin of 
the setae is plainly behind it. On each side of cephalo- 
thorax is a lamella reaching from near base of seta 
almost to the tip of head, it is rather close to the side 
margin all the way along, but at tip turns inward. Its 
highest part is toward the base. The wings are about 
as in Ceratozetes, the ventral openings are far apart, the 
setae are quite long ; legs of moderate length to short, the 
front pair extending in front of head, the femora and 
tibiae are rather broad, but not strongly swollen. In the 
front legs the tibia extends over base of tarsus and ends 
in a long bristle, the tarsus is not quite as long as the 
tibia, its tip broadly truncate, and with one claw ; on the 
upper side before tip of tarsus there is a cusp bearing a 
stout, curved bristle. 
Alloribates singularis sp. nov. 
Figs. 24, 25 
Dull yellowish brown, legs paler. Abdomen nearly 
twice as long as broad, the sides in middle nearly parallel. 
Cephalothorax very short in middle, near each side mar- 
gin is the long lamella, no visible hair at tip ; setae hardly 
as long as their distance apart, the tip fusiform, mod- 
erately swollen, and slightly scabrous; just in front of 
