18 Transactions of the Academy of Science of St. Louis 
he has reared this species by putting specimens in a jar on damp 
soil and dropping an occasional peanut into the jar for food. 
This species may at times be of economic importance since it 
is injurious to roots of beets and sugar-cane. It may be easily 
identified by its white body, lack of eyes and eyespots, scales 
over the body and on the ventral side of the furcula. Folsom 
(1933) states that this species causes serious injury to roots of 
sugar cane; cosmopolitan in distribution, Records: August 8, 
1937, Chautauqua, Illinois; July 25, 1937, Ranken, Missour ; 
November 7, 1937, Ranken, Missouri; (E. D. Bueker). 
Subfamily Tomocerinae Schaffer, 1896 
The fourth abdominal segment about the same length or 
somewhat shorter than the third. Antennae four segmented 
with the last two segments annulate, and the third segment much 
longer than the fourth. Unguiculus and furcula present. Mucro 
long and slender with apical and dorsal teeth, covered with 
hairs. Dental spines present and body scaled. 
GENUS Tomocerus Nicolet, 1841 
Tenent hair well developed. Eyes six on each side. Dental 
spines are well developed. 
Tomocerus flavescens ‘Tullberg, 1871 
Figures 39-43; length 3-6 mm., most specimens between 3-4; 
body white or yellow to dark gray, mostly white or yellow dur- 
ing summer; large tenent hair present especially on the anterior 
edge of the mesonotum where it touches the head; scales COv- 
ering the entire body of some specimens others are remark- 
ably free of scales; mandibles with 3-4 tooth-like projections ; 
labrum and labium about equal in size, labium with many long 
setae; antennae 2-3 mm. in length or one-half to two-thirds the 
length of the body, second about twice the length of the first, 
