120 CALIFORNIA ACADEMY OF SCIENCES. 



(Monterey, California). The species was not present on 

 any one of five Coots taken at Lawrence, Kansas. A 

 well-marked member of the group clyfcati sutura dis- 

 tinct a. 



Description of the male. Body, length 2.4 mm., width 

 .4 mm. ; fuliginous with paler femora, antennas, prothorax 

 and posterior half of abdomen, and black marginal bands 

 on head, thorax and abdomen. 



Head, length .53 mm., width .35 mm. ; elongate, conical, 

 with narrowly parabolic front, four marginal hairs in front 

 of suture and three behind it; temporal margins with 

 one hair, occipital margin straight or feebly concave ; no 

 trabecule; eyes inconspicuous; antennas, first segment 

 short, second segment large, broadest at base, almost as 

 long as third, fourth and fifth together, third deeply 

 notched and with an acute claw-like extremity, fourth 

 and fifth short, cylindrical and more strongly colored than 

 other segments; signature shield-shaped, extending to 

 front margin of head, pale-colored anteriorly, with indis- 

 tinct transverse striae parallel with anterior margin, dark 

 brown behind, a distinct suture extending from posterior 

 angle along the median line not quite to the anterior mar- 

 gin of signature ; this suture also extending posteriorly 

 almost to mandibles; antennal bands broad, dark and 

 straight; temporal margins bordered with black, paling 

 inwardly; an acorn-shaped occipital signature, apex for- 

 ward. 



Prothorax almost square, bare, with uniform lateral 

 marginal black band, which bends inwardly at the pos- 

 terior angle. Metathorax quadrangular, longer than 

 broad; anterior angles diagonally truncate; a slight con- 

 striction behind the anterior angles; posterior margin 

 straight, with three very long hairs and one shorter hair 

 in each posterior angle ; segment dark brown, with uneven 



