410 H. E. EWING. 



it is broader than the width of the femur of leg one. The abdomen 

 bears at least eight other pairs of spatulate bristles, but they are of 

 about the usual size. There are two bristles situated just above each 

 pteromorpha ; two on each side of the median line at the posterior 

 margin of the abdomen, one pair on the postero-lateral margin just in 

 front of these ; two situated almost touching each other at the middle 

 of each lateral half of the dorsum and a single bristle situated about 

 one-half the distance from these two to the anterior margin of the 

 abdomen. Genital and anal covers subequal ; genital covers situated ap- 

 proximate to the anterior margin of ventral plate ; anal covers situated 

 their length from the genital covers and three-fourths their length from 

 the posterior margin of the ventral plate. 



Legs rather short; tarsus and tibia of leg one subequal. Each leg 

 bears several large, stout, slightly curved serrate bristles. Unguis 

 tridactyle; dactyles unequal. 



Length, 0.54 mm. ; breadth, 0.42 mm. 



Under hickory bark. Collected by H. Glasgow at Urbana, 

 Illinois. Three specimens. 



Gen. GYMNOBATES Banks. 



Pteromorphae long, extending beyond the anterior margin 

 of the abdomen, and attached to the cephalothorax ; claws 

 tridactyle ; tarsus of leg one broad at the tip. 



One species. This is the second to be recorded in this 



genus. 



Gymnobatus longus n. sp. 



(Plate XV., Figs. 13, 14.) 



Pale, yellowish brown; integument of medium thickness, surface 

 smooth. 



Cephalothorax long and narrow. The situation of the lamellae is 

 peculiar in this species. The true lamella? are situated laterally. They 

 are very long and narrow, about two-thirds as long as the cephalo- 

 thorax, and their posterior ends, or the bases of the lamellae, are 

 situated below the attachment of the pteromorpha? to the cephalo- 

 thorax. The inner lamellae are indicated by two very short ridges 

 situated at the posterior part of the cephalothorax ; a very long, narrow 

 translamella connects their anterior ends. There is a posterior pair of 

 very long, pectinate bristles situated just in front of the transmella. 

 The lateral, true lamellae each bears a long, slightly curved, pectinate 

 bristle, about as long as the lamella from which it extends. Pseudo- 

 stigmatic organ with a small, short peduncle and a large, globose 

 head. 



Abdomen about one-half as broad as long ; pteromorphae very long, 

 about as long as abdomen and extending from behind the middle of 



