652 PROCEEDINGS OF THE ACADEMY OF [Sept., 



Ocelli 15, arranged in 4 series (5, 1 + 4, 3, 2), 



Presternal teeth 2-2, obtuse, those of each side close together and 

 toward middle. 



Three posterior pairs of coxae armed laterally with a stout spine, un- 

 armed beneath. Anal legs with claw unarmed; spines 1, 3, 3, 1. 

 Penult legs with claw armed with two spines; spines 1, 3, 3, 2-1, 3, 3, 3. 

 Spines of first legs 2, 3, 2. 



Coxal pores small, round, 4, 5, 5, 5. 



Claw of female gonopods entire, acute, short; basal spines 2-2, the 

 inner shortest. 



Length 22 mm.; width of 10th plate 2,6 mm. 



Locality.— New Mexico (Prof. T. D. A. Cockerell). 



Lithobius fungiferopes sp. nov. 



Dark purple-brown, head darkest, almost black; antennae rufous 

 distally; legs light purple-brown proximally, yellow distally. 



Posterior angles of 9th, 11th and 13th dorsal plates produced. 



Antennae short ; articles 20, mostly short. 



Presternal teeth 2-2. 



Posterior coxae unarmed. Anal legs with claw armed with a spine; 

 spines 1, 1, 0, 0! Penult legs with claw armed with one spine; spines 

 1, 1, 0, 0. Spines of first legs 0, 0, 0! 



Claw of female gonopods wide, short, tripartite; basal spines stout, 

 acute, subequal. 



Anal and penult legs of male strongly swollen; none of the joints of 

 anal legs produced into lobes, but the fifth joint of the penult legs bear- 

 ing at its distal end above a peculiar pilose process which is rounded 

 distally and constricted at base, fungiform. 



Length 5-6 mm. 



Locality. — Ithaca, New York. 



Not uncommon under fallen leaves in woods. 

 Lithobius euthus sp. nov. 



Brown, the first and the last dorsal scuta darker, reddish ; head red- 

 dish brown; antennae brown to reddish brown, paler distally. 



Angles of 11th and 13th dorsal plates produced in adults or some- 

 times nearly straight, this character being evidently variable in this 

 form. 



Antennae short (5.4 mm.) ; articles 25-28, moderate. 



Ocelli 8 in 3 series. 



Presternal teeth 2-2. 



Posterior coxae unarmed either ventrally or laterally. Anal legs 

 with claw armed wath a single spine ; spines 1, 3, 2, 0. Penult legs with 



