.170 The Ohio Naturalist. [Vol. VII, No. 8, 



Length 1.9 mm.; head .8 mm. long, .8 mm. broad, .4 mm. deep 

 from front to back; antennae 1.7 mm. long, joints in the ratio 

 of 7:22:25:6; body 1.6 mm. long, .8 mm. broad, .9 mm. deep; 

 spring 1.6 long, segments in the ratio of 5:6:2; sucker, including 

 filaments, 1.5 mm. long. Habits, found in numerous localities, 

 under decaying wood, under damp stones, or boards, and occa- 

 sionally found on various species of fungus. 



This is one of the most common and widely distributed species 

 of the genus. I have found it quite abundantly in Ohio, and it 

 has been reported as abundant in Maine by Harvev who found 

 it associated with P. marmoratus on Agarics and Boleti, and has 

 also been reported from Minnesota by Guthrie. I have taken 

 it in mid-winter in Ohio, where it occurs in small colonies in 

 suitable localities. The very young have a decidedly bluish 

 tint, but otherwise resemble the adults very closely. They are 

 sluggish in their movements, but when disturbed can jump eight 

 or ten inches. Harvey states that the smaller claw is over a half 

 the length of the larger; however, in all the specimens I have ex- 

 amined a long-hair-like projection extends beyond the end of the 

 larger claw. 



7. Papirius olympius MacGillvra3\ 



1893. Papirius olympius MacGillvray. 

 • 1895. Papirius olympius DallaTorre. 



Prevailing color reddish, spotted with dark brown, in young 

 specimens purplish. Head, vertex covered with stiff bristles; a 

 longitudional brown band extending from the back of the head 

 to the eye spot, another in the middle of the vertex extending 

 down the middle of the front. Antennae nearly as long as the 

 body, purplish, hairy, basal segment light at base, dark at apex 

 and one-fourth the length of the second; second segment one- 

 half the length of the third, third segment slender, with seven 

 sub-segments at apex; fourth segment with six sub-segments. 

 Eye spQt black. Abdomen and thorax with two sinuate brown 

 bands on each side of the dorsum, the middle ones meeting at 

 the apex and base of the thorax and on the basal half of the ab- 

 domen; akso a band extending from this basal transverse band 

 of the abdomen along the middle ( f the back towards the head 

 bilobed in front, a triangular spot just before the apex of the 

 abdomen, and promiscuous brown mottlings on the side; body 

 covered with broad flattened hairs. Legs reddish, long, slender, 

 spiny. Claws long, outer three times as long as the tibia is 

 broad, with two teeth ; inner two-thirds the length of outer, with 

 a hair at apex reaching beyond the apex of the outer claw; 

 tenant hair wanting. Furcula long, slender; manubrium short, 

 two-thirds the length of dentes; dentes with a row of long, hair- 

 like spines along the side of each member; mucrones about one- 

 fourth the length of dentes, serrate beneath. 



