82 CALIFORNIA ACADEMY OF SCIENCES. 



whole abdomen, except segment 9, strongly colored; 

 segments 2-7 with ' broad black lateral bands; segments 

 with long, transverse, dark brown blotches barely separated 

 medially by an uncolored line, widest on second segment 

 and narrowing on each successive segment; transverse 

 blotches confluent medially on segment 1, with a small, 

 medial, angulated, uncolored emargination on anterior 

 margin ; segments 2—5 with a series of pustulations along- 

 posterior margin of each transverse blotch, and behind each 

 series a narrow dark brown transversal line; segment 1 

 with but two demi- pustulations near mesal end of each 

 transverse blotch ; segment 9 with uncolored anterior an- 

 gles, and a lateral smoky brown blotch with four or five 

 short pustulated hairs; posterior margin truncate with a 

 few rather short hairs; genitalia extending through seg- 

 ments 3-9. 



Female, length 2. mm., width .9 mm.; head, length 

 .65 mm., width .65 mm. ; transverse blotches of abdomen, 

 except of segment 1, not closely approached mesally; 

 segments 1-6 with series of pustulated hairs along pos- 

 terior margin of transverse blotch, four hairs in segment 1, 

 six hairs in segments 2-6; blotches on segments 2-5 acute 

 mesally, blotches of segment 6 diagonally truncate, and of 

 segment 7 flatly rounded; a narrow transversal line be- 

 tween succeeding blotches of each side of abdomen ; 

 segment 8 wholly colored, with a narrow transverse line 

 running across segment close to and parallel with ante- 

 rior margin of blotch; posterior margin convex with four 

 hairs. 



Docophorus graviceps n. sp. (Plate iii, fig. 3.) 



A single male specimen, taken from an American Coot, 

 Fulica americana (Bay of Monterey, California) ; and 

 two females from a Pacific Loon, Urinator pacificus (Bay 

 of Monterey, California). 



