12 CALIFORNIA ACADEMY OF SCIENCES. 



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Docophorus rutteri n. sp. (Plate I, fig. 3). 



A female and an immature specimen from an Ore- 

 gon Chickadee, Parus atri-capillus occidentalis (Kodiak 

 Island, Alaska). Denny has described two species of 

 Docophorus from Parus, one, pallescens (Monograph. 

 Anoplur. Brit., p. 82, pi. i, fig. 8) from Parus palustris 

 and P. major, being based on immature specimens, and 

 characterized by an emarginate clypeal front; the other, 

 pari (ibid, p. 87, pi. vi, fig. 6) from Parus caudatus, P. 

 ater, and -P. cceruleus, being of chestnut ground color, 

 without lateral abdominal blotches and with a subacu- 

 minate head, and without series of pustuled hairs along 

 posterior margins of metathorax, in all of which diag- 

 nostic characters my specimen differs from pari. It 

 agrees with it in hairy abdomen, acute trabeculae, 

 angulated metathorax, and general shape of abdomen. 



Description of female. Body, length 2. mm., width 

 .91 mm.; well marked with smoky brown blotches with 

 large conspicuous pustulations, and many long hairs on 

 dorsal aspect of abdomen. 



Head, length .53 mm., width .6 mm.; a specially stiff, 

 spiny short hair in each anterior angle of the flatly 

 convex front, a hair before the suture and two before the 

 trabecule; the trabeculse long, slender, and weakly 

 curving; antennte when projecting backward barely 

 reaching the occipital margin, with annulated segments; 

 eye rather prominent, with a hair; a hair just behind 

 the eye and three more on the rounded temporal an- 

 gles; occipital margin weakly sinuous, the middle third 

 slightly convex; signature large, distinct, with darker 

 posterior acuminate point projecting beyond the man- 

 dibles, surrounded by a nearly uncolored region; anten- 

 nal bands interrupted, widening at base; occipital bands 



