DESCRIPTIONS AND DETERMINATIONS OF SPECIES 



37 



county; Freestone, Sonoma county; Sanhedrin Mt., Mendocino county, 

 Calif.), and Sciurus douglasi mollipilosus (Cazadero and Freestone, So- 

 noma county; Gualala, Mendocino county, Calif.). One female from 

 Sciurus fossor nigripes (Mt. Hamilton, Calif.). 



Fig. 14. — N eohaematopinus antennatus (Osborn) ; A, pleural plates, and B, ventral 

 side of terminal abdominal segments of female from Sciurus griseus. 

 N eohaematopinus paciiicus n. sp. ; C, posterior margin of third abdominal 

 tergite male, and E, pleural plates of female.. 



We are referring these specimens to N. antennatus, altho we have 

 not seen the type of this species and cannot be absolutely sure of our de- 

 termination. Professor Osborn has sent us specimens of a species labelled 

 "near antennatus" which differ from our specimens in having the distal, 

 post-axial angle of the first antennal segment much less produced, but 

 agree with our specimens in other particulars. Osborn records the spe- 

 cies from Sciurus cinereus var. ludovicianus (Ames, Iowa). Our speci- 

 mens are characterized by the almost entire absence of chitinized tergal 

 and sternal plates, altho in some specimens these are present as narrow 

 bands immediately in front of the transverse rows of hairs. 



