. Bulletin of the Southern California Academy of Sciences. Science; Natural history; Natural history. PLATE 35 Oeusitia ashcrafti Augusts. A. Head, lateral aspect. B. Sternlte VII, lateral aspect. (Highly magnified) of eighteen spines. Two small teeth on metanotum and on the first three abdominal tergites. Bristles on abdominal tergites not reaching spiracles laterally except in first three segments. Ante- pygidial bristles three, the middle longer than the equal outer two. Style small, blunt, its length not more than twice the basal width; one long terminal bristle, two shorter lateral bristl
. Bulletin of the Southern California Academy of Sciences. Science; Natural history; Natural history. PLATE 35 Oeusitia ashcrafti Augusts. A. Head, lateral aspect. B. Sternlte VII, lateral aspect. (Highly magnified) of eighteen spines. Two small teeth on metanotum and on the first three abdominal tergites. Bristles on abdominal tergites not reaching spiracles laterally except in first three segments. Ante- pygidial bristles three, the middle longer than the equal outer two. Style small, blunt, its length not more than twice the basal width; one long terminal bristle, two shorter lateral bristles. Sternite VII (Fig. B) without a sinus, upper lobe extending slightly posteriorly (upper posterior angle blunt to pointed). Bursa copulatrix roughly funnel shaped, the mouth of which is not greater in diameter than twice that of the neck. Spermatheca in the shape of a hand sickle, the handle representing the tail, the blade representing the head. Legs: All fifth tarsal segments with five lateral plantar bristles. Length of hind tarsus I equal to that of II and III. Hind coxa with many thin, small setae on lower anterior inner half. Holotype: Female (author's collection number 38-8) de- posited in the Los Angeles County Museum, Los Angeles, Cali- fornia. Paratypes: 16 females collected by author (number 38-8) August 8, 1938 from 5 conies along with the Holotype. Two paratypes placed in the Los Angeles County Museum, the re- mainder in the author's collection for distribution later with 3 females collected by Dr. R. L. Rutherford from similar host (author's number 40-136), August 27, 1940, Mammoth IMeadows (10,500 ft.). Mono County, California. Type Host: Ochotona schisticeps albafiis Grinnell. Type Locality: Dusy Lakes, east of Bishop Pass (11,500 ft.), Fresno County, California. The genus Geusibia Jordan was founded on G. torsa Jordan, an oriental (Chinese) species parasitic upon the genus Ochotona, and this is the first Xorth American record of the genus. This genus is clos
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