ZooL.— Vol. III.] BANKS— ARACHNIDA FROM CALIFORNIA. 369 



Dermacentor reticulatus Fahricius. Ent. Syst. iv, 1794, 

 p. 428. 



From Palo Alto (Baker) and Mt. Shasta (Lembert). 



Haemaphysalis concinna Koch. Arch. f. Naturgesch. x, 

 1844, p. 237. 



From Claremont, on Lofhortyx californicus valloti 

 (Baker). 



Ixodes angustus Neumann. Mem. Soc. Zool. France, 

 1899, p. 136. 



Two from Siskiyou County, also received from 

 Massett, British Columbia. 



Ixodes californicus n. sp. 



Plate XLI, Fig. 57, 



Shield reddish brown, paler in the middle, body brown, or yellowish 

 brown; coxae brown, rest of legs paler. Body sparsely clothed with white 

 hairs. Shield longer than in /. hexagontis, yet not nearly as long as in I.fi'o?i- 

 talis, finely punctured; body of female oblong-elliptical. Coxae i with a black 

 hump behind toward tip, but no basal spine, coxae 11 and iii with a prominent 

 subapical spine behind, coxae iv with a small protuberance; tarsi i with two 

 little humps above near Haller's organ. 



Length ? 4 mm. 



Several specimens from Toxostoma crissalis, Claremont 

 (Baker). 



It can be easily distinguished by the shape of shield and 

 armature of coxae. 



Ixodes hexagonus Leach. Trans. Linn. Soc. London, xi, 

 1815. P- 397- 



Two females from Santa Clara County, and males from 

 Palo Alto (Baker) and Mt. Shasta (Lembert). The 

 shield is more nearly round than figured for European 

 specimens, but the coxal armature is the same. 



