484 CALIFORNIA ACADEMY OF SCIENCES. 



gin evenly flatly convex ; lateral border curving inwards 

 along posterior margin blackish brown. Metathorax 

 short; lateral angles obtusely rounding; posterior mar- 

 gin with obtuse produced angle and four or five hairs on 

 each side; uneven lateral border and transverse blotch 

 not contiguous to posterior margin, dark brown. Sternal 

 marking's consisting' of intercoxal lines. Legs concolor- 

 ous with pale smoky brown of body, with black marginal 

 markings. 



Abdomen elongate, about one-third wider than head, 

 with few long hairs in very slightly projecting posterior 

 angles of segments; a few hairs arranged in hVe uneven, 

 longitudinal rows on dorsal surface; broad, pronounced, 

 blackish, lateral bands, with distinct uncolored stigmatal 

 spots and broad transverse blotches extending from band 

 to band on segments 1-8; the blotches on segments 1-2 

 deeply emarginated medially on anterior margin, and 

 the blotch on segment 7 faint in median part; segment 9 

 projecting, rounding, with several long hairs on posterior 

 margin and a median blotch; genitalia showing in seg- 

 ments 7-9. 



Female. Body, length 1.9 mm., width .72 mm.; head, 

 length .6 mm., width .53 mm.; last segment of abdomen 

 slightly angularly notched. 



Docophorus cursor Nitzsch. (Plate lxvi, fig. 1.) 



Zeitschr. f. ges. Naturwiss. (ed. Giebel), 1861, vol. xvii, p. 527. 

 Philopterus cursor N., Walckeurer, Hist. Nat. Ins. Apt.; 1844, vol. iii, 



p. 341. 

 Docophorus cursor N., Burmeister, Haudb. d. Ent., 1835, vol.ii, p. 426; 



Denny, Monograph. Anoplnr. Brit.,' 1842, p. 101, pi. ii, fig. 1; 



Giebel, Iusecta Epizoa, 1874, p. 75, pi. xi, figs. 5, 6; Piaget, Les 



Pediculiues, 1880, p. 24, pi. i, fig. 5. 



Many specimens from a Great Horned Owl, Bubo vir- 

 ginianus (Lawrence, Kansas). Nitzsch's type specimens 

 were collected from Stri.x bubo, and he later took speci- 



