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



at base, becoming white distally; manubrium over one-third the 

 dentes in length; dentes three times the mucrones, each dentes 

 with a row of long spines on either side; mucrones cylindrical, 

 apex rounded, minutely serrated beneath, ventral abdominal 

 surface with an oval, yellow swelling either side of tiie manu- 

 brium, and two similar but much larger ones placed obliquely 

 and anteriorly. Length 1.3 mm.; maximum 1.5 mm. Habits: 

 reported by Folsom as occurring as an active, uncommon species, 

 in pine woods, under damp decaying twigs and needles, Arlington, 

 Mass. , 



10. Papirius pini Folsom. 

 1896. Papirius pini Folsom. 



Prevailing color, chestnut-brown. Head pale, a few short 

 stiff bristles upon a protrubence on the vertex, and down sides 

 of the face. Antennae four-fifths the length of body; basal seg- 

 ment stout, naked ; second four times as long with a few long hairs 

 distally ; third equalling the first two with distal half ; divided 

 into seven distinct sub-segments, and three others less evident 

 swollen terminal ones; each sub-segment with a pair of hairs, a 

 few hairs near the base of the third joint ; fourth segment equal- 

 ling basal in length, with whorls of long hairs. Eyes black. 

 Body, abdomen ovate dorsally, dilated at sides; dorsum darker 

 with several long, white bristles anteriorly, and very short 

 bristles posteriorly ; anal tubercle with long, stout bristles. Legs 

 long, slender , spiny, especially on tibia. Claws, superior one 

 long, rather straight, a sharp tooth in the middle, and another 

 midway between it and the tip, a third tooth on the outside 

 nearly opposite the last; inferior claw with straight, tapering 

 sides, and an apical hair hardly longer than the other claw; the 

 extreme tip of the claw free from the hair. On the inside of the 

 inferior claw, near the base is a dilation whose apex bears a short 

 bristle. Furcula pale, extending beyond the ventral tube; man- 

 ubrium stout; each dentes with a row of long spines on either 

 side ; mucrones tapering, one-third the length of dentes, coarsely 

 serrated beneath. Length 1.6 mm. Habits, reported by Fol- 

 som as living on the under side of pine logs, and eating the wet 

 decayed wood. 



This species has been reported only by Folsom from Arlington, 

 Mass., the description being taken from twelve specimens found 

 during October and November. Concerning the habits the 

 author further says, "The last specimens found before a severe 

 frost were all females which laid nurnerous eggs in captivity 

 when given natural conditions of moist food, air and darkness. 

 The eggs, laid singly, were spherical, with strongly flattened 



ases, translucent white, smooth, .3 mm. in diameter, .15 inm. 



igh, and with embryos quite undeveloped several days after 



eposition." 



