LIST OV THE MYRIAPOP FAMILY LITHOBTID.E OF SALT 
LAKE COUNTY. LTTAH, WITH DESCRIPTIONS OF FIVE 
NEW SPECIES. 
By Ralph V. Chamberlin, 
Of Ihc L<ittcr-(h(ii Salntfi' Cnlhyr, Salt Lakr Oily. 
I 
Tho five new species of Litliol)ius described in this paper are l)ased 
ii})on material in collections made by the author from June to October, 
1900. and in February, March, and April, 1901. Tj^pes of these new 
species have been deposited in the United States National Museum. 
Inasnuich as nothing upon the Myriapoda of Utah has been heretofore 
published, some notes are also given on the other species of the Litho- 
biidiv found within the limits of Salt Lake County. 
ANALYTICAL KKY TO THK SPECIES OF LITITOBIITS DESCRIBED. 
A. Posterior angles f)f none of the dorsal plates jjroduced. 
</,. Anal feet each armed with a single claw. 
/<,. Coxal pores in several series, round. 
c. Posterior coxa3 armed beneath with a stout spine. 
iJ. Antennpe long, articles 20; prosternal teeth, 9-fl; spines of anal legs, 1, 3, 2, 1. 
Iiipiivrfiiluft Wood 1 
}>.,. Coxal pores in a single series, round, 
c. Posterior coxse unarmed beneath. 
r/j. Articles of the antenn;e, 20-22; coxal pores- 2, 2, 2, 2—2, 3, 3, 3; ocelli, 5-11; 
spines of anal legs, 1, 3, 2, 0; length, 7.5-11 mm.. iitnhnhvs, new species2 
d.^. Articles of the antennae, 20-23; coxal pores,3, 4, 4, 3—3, 4, 4, 4; ocelli,18-22; 
spines of anal legs, 1, 3, 2, 0; length, 13-15.8 m^m... collimn, newspecies 3 
a.^. Anal feet each armed with two claws. 
/'. Coxal pores in a single series, round. 
c. Posterior coxa' unarmed beneath. 
d. Articles of the antennae, 20-25; coxal pores, 4,5,5,4 — 5,6,6,6; spines of 
the first legs, 1, 3, 2; of the anal, 1, 3, 2, 0; length, 12.2-13.8 mm. 
soeiu,i, new species 4 
B. Posterior angles of the ninth, eleventh, and thirteenth dorsal plates produced. 
(ii- Coxal pores in several series, round; anal feet with a single claw. 
/'. Posterior coxpe armed beneath with a stout spine. 
r. Antennae long, articles 20; prosternal teeth, 12 to 18; spines of anal legs, 
1, 3, 2, 1 xanti Wood 5 
Proceedings U. S. National Museum, Vol. XXIV— No. 1242. 
21 
