128 Journal New York Entomological Society. [Voi. xvii. 



Abdomen broadly pointed posteriorly. Dorsum with a few fine hairs. Genital 

 covers much smaller than anal covers and situated about one and one half times their 

 length in front of the latter; anal covers each about one half as broad as long and 

 situated almost approximate to the posterior margin of ventral plate. 



Anterior pair of legs almost as long as the abdomen. Tarsus and tibia of leg I 

 subequal in length ; genual three fifths as long as the tibia. Ungues monodactyle ; 

 about one third as long as tarsus. 



Length, 0.42 mm.; breadth, 0.27 mm. 



In rubbish. Collected by C. R. Crosby at Columbia, Mo. Three 

 specimens. 



Notaspis minuta, new species. (Plate V, Fig. 24. ) 



Light yellowish brown ; surface of integument almost smooth. 



Cephalothorax large, one half as long as abdomen. Lamella; small and indis- 

 tinct, extending only a short distance in front of the pseudostigmata. No transla- 

 mella. Dorso-vertex hairless. There is a pair of small,. curved bristles at the tip of 

 the rostrum. I'seudostigmatic organ very large, about two thirds as long as the 

 cephalothorax, with a long, thin peduncle and a large, long, markedly pectinate 

 head. 



Abdomen oblong, almond-shaped. Dorsum of abdomen with a few fine hairs 

 around the margin. Ventral plate shield-shaped, it does not e.vtend over the anterior 

 one fourth of the ventral surface of abdomen. Genital covers twice as long as broad 

 and situated in approximation to the anterior margin of ventral plate. Anal covers 

 much larger than the genital covers and situated about one and one fourth times their 

 length behind the latter, and one fourth their length from the posterior margin of the 

 ventral plate. 



Legs large ; anterior pair longer than abdomen. Tarsus slightly longer than 

 tibia. Femur and coxa of leg II [ enlarged. Ungues tridactyle. 



Length, 0.29 mm.; breadth, 0.14 mm. 



Under old pieces of timber. Collected by the author at Areola, 

 Illinois. Two specimens. 



Genus DAM-^US C. L. Koch. 



Ventral plate anchylosed to dorsal plate ; mandibles chelate ; with- 

 out lamellae ; legs thin, usually with swollen or globose segments, and 

 much longer than the body. 



Div. I. Abdomen round or subglobose ; legs about twice'as long as the body and 



with some of the segments moniliform. 

 Div. II. Abdomen oblong ; legs less than twice as long as the body; segments of 



the legs but slightly swollen. 



Div. I. 



Only the two proximal segments of the legs swollen ; second pair of legs nmch sliorter 

 than the rest ; tibia of leg I bearing a large tubercle distally from which springs 

 a very large tactile bristle. (Subdiv. {a).) Z>. magnisetosus sp. nov. 



