368 



cephalothorax, slightly curved, pectinate; translamella a 

 straight cross-bar; pseudostigmata cup-shaped; pseudostig- 

 matic organ with a small short peduncle and a large pyriform 

 head; interlamellar hairs of medium length, straight, and 

 pectinate. 



Abdomen almond-shaped, hairless; anal covers contiguous 

 to the posterior margin of the abdomen; genital covers two 

 thirds as long as the anal covers, and situated about three 

 times their length in front of them. 



Hind pair of legs longest, but not reaching to the posterior 

 margin of the abdomen; the other pairs subequal. 



Length, 0.42 mm.; breadth, 0.20 mm. 



Collected by the writer at Areola, 111. Many specimens. 



Notaspis spinipes Banks. 



1906. Oppia spinipes, Banks, Proc. Acad. Nat. Sci. Phila., Nov., 1906, p. 496, 

 PL XVII., Fig. 22. 



Chestnut brown; surface of integument smooth. 



Cephalothorax very long and narrow, almost as long as the 

 abdomen; lamella? very long, narrow, their blades extending 

 the entire length of the cephalothorax; lamellar cusps prom- 

 inent, pectinate, straight, and short; pseudostigmatic organ 

 long, straight, and pectinate; interlamellar hairs straight, pec- 

 tinate, pointing almost directly forward; rostral hairs small, 

 simple, and curved. 



Abdomen circular, with two pairs of large, straight, pec- 

 tinate spines on the dorsal margin; anal covers about the same 

 size as the genital covers and contiguous to the posterior mar- 

 gin of the abdomen. 



Legs subequal, with several stout, curved, plumose bristles; 

 tactile hairs on the tibia? of the first two pairs about twice as 

 long as the segments themselves. 



Length, 0.56 mm.; breadth, 0.34 mm. 



In moss. The author has collected specimens at Areola, 

 111. The detenu ination has been confirmed by the original 

 describer of the species. 



