ZooL.— Vol. III.] BANKS— ARACHNID A FROM CALIFORNIA. 367 



ORIBATID^. 

 Liacarus modestus n. sp, 



Plate XLI, Figs. 53 and 59. 



Body pale reddish brown, legs pale yellow. Cephalothorax with four 

 ridges and four long bristles above, setae very short, capitate, two short 

 bristles in front; abdomen rather depressed, smooth (finely pitted under high 

 power), dorsum with four rows of recurved bristles, about seven in a row; 

 legs rather short; coxal plate in two parts, each part with a short sutural line 

 to indicate coxae, but the lines do not reach middle; three equal tarsal claws; 

 the circular anal opening two and one-half times its diameter in front of the 

 larger, elliptical anal opening. 



Length .7 mm. 



Many specimens from Los Angeles. Related to L. iini- 

 color Banks, but differs therefrom in the much shorter setae. 



Oribata calif ornica n. sp. 



Plate XLI, Fig. 52. 



Abdomen red-brown; basal joints of legs brown, rest yellowish brown; 

 cephalothorax brown. Cephalothorax with a pair of curved bristles in front, 

 seta a long, erect, simple bristle; abdomen high, globose, above with a sub- 

 median row each side of about seven or eight short, strongly-curved bristles; 

 genital and anal apertures close together, the former the larger. Legs not 

 very long, the joints greatly swollen in places; the tarsi long and slender, 

 femora have several strongly-curved hairs, the hairs beyond are less curved; 

 there is but one tarsal claw. 



Length .85 mm. 



One specimen from Mt. Shasta. 



Phthiracarus cryptopus n. sp. 



Plate XLI, Fig. 50. 



Body brown, more yellowish at base of abdomen, smooth and shining; 

 legs pale. Cephalothorax with six bristles above, the anterior pair shorter 

 than the others. Abdomen large and high, about one-fourth longer than 

 broad, with two rows of fine hairs each side above, about five hairs in each 

 row; other shorter hairs on the lower margin; ventral region very narrow, 

 acute behind, divided before middle by a transverse notch; setae are simple 

 erect rods, barely thicker toward tip and not half as long as bristles. Legs 

 very short, and hairy. 



Length i mm. 



Several specimens from Claremont (Baker). 



