OF WASHINGTON, VOLUME XII, ]!)!(). 7 



apart. Shield nearly diamond-shaped, the anterior and posterior sides 

 subequal ; surface evenly and rather heavily punctured; the lateral car- 

 ins distinct. Stigmal plate circular. Legs of moderate length; tarsus 

 I only a trifle longer than the preceding joint ; all tarsi abruptly nar- 

 rowed near tip. Coxa I with a distinct but short spine at base and a 

 minute tooth near tip; a smaller apical tooth on coxae II and III. No 

 projection on the lower side of rostrum Surface of body very finely 

 haired. v 



Length of shield (female), 1 mm. 



From Berkeley Hills, California, taken from the California 

 ground squirrel, Otospermophilus bcechcvi, by Drs. Wellman 

 and Wherry. 



It runs to/, august us in my table of J.vodes (Revision of the 

 Ixodoidea), but differs at once in shorter shield, of different 

 shape, more circular porose areas, shorter tarsus I, etc. 



Family ORIBATID^. 



Pelops tibialis, new species. 



Color red-brown, legs pale. Cephalothorax small, pointed in front; a 

 rather broad lamella each side, with slender, pointed tip, lying close to 

 side of head, and outside of this is another lamella, not reaching so far 

 forward, also with pointed tip, and a heavy, finely serrate bristle arising 

 from beneath its tip; pseudostigmatic organ short, capitate; superior 

 bristle a large, spatulate, scabrous scale reaching in front of the cephalo- 

 thorax. Abdomen narrowed in front, broad and broadly rounded 

 behind, surface roughened, behind with about seven clavate or scale- 

 like hairs each side; wings not very long, but large and deep, with 

 anterior edge nearly straight, and lower edge evenly rounded. Venter 

 nearly smooth, genital aperture one and a half times its length in 

 front of the equal anal aperture ; coxal plate with three lines each side, 

 the posterior one the shortest; a sharp-pointed tectopedium in front 

 of coxa I and one behind. Legs slender, the patella more slender 

 than other joints, especially in legs I and II, while the tibiae and tarsi 

 are rather enlarged, and besides the simple hairs have a few stout 

 spines; femora III and IV are very broad; claws three, the middle one 

 very much larger than the others: patellae and tibia- I and II each with 

 a large serrate spine on each side, that on the outer side the heavier. 



Length, 0.7 mm. 



From Falls Church, Virginia. 



Galumna partita, new species. 



Yellowish brown, a paler spot at base of abdomen. Cephalothorax 

 small, a broad hyaline lamella each side reaching to tip and extending 

 out in a sharp point; superior bristles short and straight, arising from a 



