22 Transactions of the Academy of Science of St. Lous 
about one-half the length of the unguis -with a tgoth -near.the , 
middle of the inner margin; without tenent hair. on, any part’ 
of the body; mucro tridentate, last two teeth of mucro. opposite 
each other; dentes crenulate dorsally and. with many short setae; . 
a few igre setae on the proximal three segments of each leg; 
numerous small setae on the three distal leg segments ; the 
larger setae on the abdominal and meta and meso thoracic 
segments are more or less distributed around the lighter ‘round 
and facet-like spots; round and hexagonal facet-like. spots are. 
near the middle lateral region of each segment except the first. 
thoracic and the last abdominal, approximately 6-8 spots lateral 
of each side of the head below the black rectangular eyespots, 
12-15 on each side of the fourth abdominal segment ; body! grad- 
ually tapering from the first thoraic segmerit to the ‘last: 
abdominal. 
This is a large conspicuous species and is cosmopolitan. in 
distribution. According to Folsom (1937, ) there. are “several 
varieties. .of this species... Records: March 2h, 1934, Ranken, 
Missouri, (E. P. BESS a A ee number of specimens 1 Werf . 
taken at this time from humus. 
Sg yt 
1sotoma cinerea Nicolet, 1847 
Figures 8-13; length 1.5-2 mm.; grayish to dark green; an-" 
tennae 4-segmented and slightly’ tonger than the head; segments © 
to each other as 1, 1.8, 2, 2.2; eyespots well-developed ; no” “oon?* 
spicuous markings ; _body covered with short setae and a “few 
longer setae on the dorsal surfaces of the fourth, fifth, | “and. 
sixth abdominal segments ; unguis well- -developed ; “unguiculus 
about two- thirds the length of the unguis ; claws with at least _ 
two tenent hair; furcula not reaching to the,ventral tube; mucro. 
with one apical spine and two anteapical spines pointing. ventrally oa 
