ART. 18 NEW GENERA OP MILLIPEDS COOK AND LOOMIS 17 



very oblique row, 1 or 2 in each series usually being covered by the 

 first segment. A low tubercle bearing a long hair above the lower 

 ocellus of each series. Below the base of the antennae is a broad 

 transverse depression in front of which the clypeus is somewhat 

 inflated ; labral area gradually narrowed, the apex somewhat rounded. 



First segment very small, only one-third as wide as the full-sized 

 segments, almost squarely truncate in front and with a narrow raised 

 rim ; posterior margin broadly and evenly rounded. 



Body shining; anterior subsegments almost smooth, a few faint 

 impressed longitudinal lines near the caudal margin; posterior sub- 

 segments more conspicuously impressed with similar lines, rather 

 deep on the anterior third, fainter toward the middle, the hind mar- 

 gin smooth; exposed portion of the anterior subsegment usually 

 about one-third the length of the posterior subsegment, the hind 

 margin of the middle segments of the body slightly and broadly 

 emarginate at middle; pores of the fifth segment on the anterior 

 subsegment slightly above the posterior corner and near the trans- 

 verse sulcus; other pores on the posterior subsegments, closer to the 

 transverse sulcus than to the lateral margin ; dorsal encroachment of 

 the pleurae very slight but forming a narrow raised lateral margin 

 to each segment. 



Legs almost reaching the sides of the body, slightly separated from 

 each other by the sterna which are elevated behind and on the sides 

 and form a depression open in front; basal joints of the, legs with 

 rounded-oval pits. 



Females with the first pair of legs very small and slender, much 

 more reduced than those of the males, which also are smaller than 

 the following pair. 



Type.— Cat No. 978, U.S.N.M. 



Several specimens from Belden, Plumas County, Calif., collected 

 by H. S. Barber, January 2, 1923. " It is numerous, in several sizes 

 from about 4 mm. up, under bark and in splintered crevices of oak 

 log near the mouth of Chipps Creek." 



Genus HYPOZONIUM Cook 



HYPOZONIUM ANURUM Cook 



Eypozonium anurum Cook, Myriapoda of Northwestern America, Harriman 

 Expedition, p. 63. 



This species was described from Seattle, Wash. It has been 

 reported also from Bremerton, Wash.^ 



8 Chamberlin, R. V., Can. Ent., p. 262, August, 1911. 



