y6 CALIFORNIA ACADEMY OF SCIENCES. 



Pustulated Hairs (p. h. fig. 1). Hairs rising from uncolored (unchit- 

 inized) spaces. 



Signature (sir/., fig. 1). A colored blotch on the clypeus, usually with 

 a posterior acuminate point. The occipital signature is a usually sub- 

 circular colored blotch on the under surface of the hind-head, often show- 

 ing through above. 



Sternal Markings (fig. 4). Colored 

 blotches and lines on the ventral aspect of 

 the thorax. 



Temporal Margins {t.m., fig. 1). The 

 Vi ^ lateral margins of the hind-head. 



Trabecule (tr., fig. 1). Two processes, 



Fig. 4 Ventral aspect of h side of the head projecting 



thorax and first abdominal seg- r 



men t of Mrmus prcestans Kell. ; laterally from the anterior angle of the au- 



cox., coxa; i. c. I., intercoxal . . -, n „ •„ n „ 



line; m. bi., median sternal tennary fossa; largest and movable in Do- 



blotch; to 61. a., median blotch cop h rus. 



of abdominal segments. ^ 



Transverse Blotches (tv. bl., fig. 1). The colored blotches, one on 



each lateral half of each abdominal segment. 



Collections Made. 

 The specimens which I have had for study have been 

 collected by me from newly-killed birds, or from freshly- 

 made skins under the following circumstances : 



(a) A collection made at Lawrence, Kansas, during 

 the years 1889-1892, exclusively from newly-killed birds, 

 the birds determined by me, and in most cases collected 

 by me. 



(b) A collection made by me at the Hopkins Seaside 

 Laboratory on the shore of the Bay of Monterey, Cali 

 fornia, during the two weeks from Dec. 17, 1894, to Jan. 

 1, 1895, from newly-killed birds and from the fresh skins 

 lying in cotton forms on tables in the laboratory; the birds 

 were collected on the bay by Mr. Leverett M. Loomis, 

 Curator of Birds of the California Academy of Sciences, 

 and were determined by him. 



It will always be of interest to the student of these 

 parasites to know the exact conditions attending the col- 



