44 CALIFORNIA ACADEMY OF SCIENCES. 



long hair along the narrowly rounded margin of the 

 lateral angles, and five long hairs on each lateral half 

 of the fiatly rounding posterior margin; the lateral 

 margins narrowly darker than the rest of segment, 

 which presents no blotches; the uncolored transverse 

 chitin bar is distinct, and the curving longitudinal bars 

 at its extremities are darker than general color of seg- 

 ment. Metathorax as short as or shorter than pro- 

 thorax, with very slight lateral emargination ; lateral 

 posterior angle with several small spines, and posterior 

 margin, which is fiatly convex, bears, beginning in lat- 

 eral angles, two long hairs, then a spine, then eight 

 long hairs, on each lateral half; a narrow transverse 

 pale brown blotch runs across the segment near the 

 posterior margin and expands at its lateral extremities. 

 Legs of pale ground color of thorax with narrow darker 

 marginal markings. 



Abdomen ovate, rather turbinate, with longish hairs 

 in the posterior angles of the segments and a single 

 series of strong hairs across the dorsal aspect of each 

 segment, ranged along the posterior margin of a pale 

 brown transverse band which extends entirely across 

 each segment; this band covers only about one-half 

 the dorsal aspect of each segment, the uncovered half 

 being of the whitish ground color of the general body, 

 ninth segment flatly convex behind, with fringe of un- 

 colored fine hairs, and with a few long hairs at lat- 

 eral rounded angles. 



Menopon striatum n. sp. (Plate IV, fig. 6). 



Six specimens from a Willow Ptarmigan, Lagopus lago- 

 pus (Kodiak Island, North Pacific Ocean), Nearly 

 twice as large as G rube's M. lagopi from Lagopus alpi- 

 nus, though in general appearance the species must be 



