THE FLEAS OF NORTH AMERICA 53 



Oropsylla (Opisocrostis) tuberculata tuberculata (Baker), new 



combination 



Geratophyllus tubcrculatus Baker, 1904, U. S. Natl. Mus. Proc. 27: 393, pi. 13, 



figs. 7-9. 

 Opisocrostis tuberculatus Jordan, 1933, Novitates Zool. 39: 73. 



Type host. — Citellus columbianus (Ord) (ground squirrel). 



Type locality. — Moscow, Idaho. 



Range. — Western part of the United States and Canada for the 

 species and western part of the United States for the variety. 



The original description of this variable species and its type 

 variety was based on a single male and female. It is accompanied 

 by three detail drawings. Jellison (35, p. 81^2) in 1939 gave draw- 

 ings of part of the terminalia of each sex. 



Oropsylla (Opisocrostis) washixctonensis (Good and Prince), new 



combination 



Opisocrostis washingtonensis Good and Prince, 1939, TJ. S. Pub. Health Serv. 

 Rpts. 54 : 1691, rigs. 3-4. 



Type host. — Citellus washiTigtoni How. (ground squirrel). 



Type locality. — Adams County, Wash. 



Range. — Washington and Oregon. 



This species is closely related to oregonensis but differs from the 

 latter in having the manubrium of the clasper of the male longer and 

 less triangular and in having a small, instead of a large and deep, 

 notch in each posterior, lateral margin of sternal plate VII of the 

 female. The original description of washingtonensis is accompanied 

 by drawings of the terminalia of both sexes. 



The Genus Amphalius Jordan 



Amphalius Jordan, 1933, Novitates Zool. 39: 74. Type, Ceratophyllus rumatiis 

 Jordan and Rothschild (by original designation). 



Frontal tubercle angulate, partly sunk into frontal notch. Eyes well devel- 

 oped. Labial palpus long, extending to apex of trochanter I. Setae on antennal 

 segment II of female long. Pronotal comb with more than 24 spines. Femur I 

 with several lateral setae; coxa III without a row or patch of spinelets 

 on inner surface; first pair of plantar bristles of segment V of each tarsus 

 shifted somewhat ventrally. Basal sternal plate of abdomen without lateral 

 bristles. Antepygidial bristles on each side of abdomen in female 3. Stylet 

 of female cylindrical, apex rounded, bearing several bristles. In male, sternal 

 plate VIII narrow, fringed on upper surface, with large, fringed, apical flap; 

 sternal plate IX with vertical inner process bearing a tooth above middle of 

 posterior margin ; process of clasper long, narrow, truncate or rounded api- 

 cally ; movable finger broad, flat, curved forward at apex, with large, black, sub- 

 apical bristle and a posteroventral process which may be as long as the finger 

 proper. 



Species of this genus are rather remarkable for the very conspicuous 

 posteroventral process of the movable finger of the male claspers. In 

 the Asiatic species clams Jordan and Rothschild this process is 

 actually longer than the finger itself and is dilated apically into a 

 disklike lobe. Besides this Asiatic species, Amphalius contains a 

 Xearctic species and another Asiatic species. 



