44 



SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I23 



half as long as greatest width of movable finger or digitoid ; ventral 

 margin smoothly and shallowly rounded to region where it joins 

 the manubrium. (One male from Lincoln, Maine, shows this area 



Figs. 91-94. — Peromyscopsylla tikhomirovae : 91, Head and prothorax, c?; 

 92, dorsal portion of mesonotum, 6 ; 93, anal stylet, ? ; 94, modified segments, c?. 

 For explanation of symbols see pages 67-68. 



slightly angled, but not definitely so.) Movable process of clasper 

 (F.) roughly triangular in shape, with apex of triangle being ventral ; 

 anterior and posterior margins proximally concave ; the anterior and 

 posterior dorsal angles subrounded ; dorsal margin from slightly con- 



