JOURNAL, OF ENTOMOLOGY AND ZOOLOGY 127 



the legs bear at the tips of their tarsi two stout claws and a 

 small pulvillus. Pulvillus a little over one-half as long as the 

 flaws and pectinated on its lower mai'gin. Total length of 

 body, 0.70 mm. ; width, 0.42 mm. 



From Corvallis, Oregon; in moss; by the writer. 



Described from three individuals. This species appears to 

 lie related to M. suhnuda Berlese. It differs from Berlese's 

 species in having the body clothed with a different kind of 

 setae, in having more slender legs, and in having a large median 

 eye, as well as in some other characters. This is the first 

 species of this genus and the first representative of the family 

 Alycliidce to be described from this country. 



Family C^CULID^ 



Genus Cerdtodcdiiis n. gen. 



Palpi simple, tactile, non-raptorial, composed of four seg- 

 ments; first segment very short; second, long; third, long; 

 fourth, short and bearing several long tactile bristles. Cheli- 

 cerfp very large, almost enormous, chelate, moving vertically. 

 Eyes three; two of which are lateral and sessile, one is anterior 

 and median. Posterior part of cephalo-thorax and all of the 

 alxlomen covered above with a single, thick, coriaceous shield, 

 which shield bears the posterior eyes. Anterior part of cephalo- 

 thorax covered with a similar, thick, coriaceous shield which is 

 sejiarated from the former mentioned one by an incomplete 

 suture, and bears a pair of large horn-like tubercles on its 

 anterior margin. All four pairs of coxae joined together, the 

 coxfe of each pair meeting at the median line. No sternum. 

 Ventral surface of abdomen covered by a single, thick, coria- 

 ceous plate which in the case of the female has a large aperture 

 for the genital and anal openings. Each of the latter is closed 

 liy a pair of folding chitinous doors, or covers. In the male the 

 genital and anal openings are separate, but are closed by 

 chitinous folding covers as in the female. 



Type species: C. pacificiis n. sp. 



