74 PLANT-BUGS INJURIOUS TO COTTON BOLLS. 
Its distribution in the cotton belt is apparently restricted to western 
Texas, for there is no instance known to the writer of a specimen 
being taken east of the semiarid region of that State 
PENTATOMID BUGS OF THE GENUS EUSCHISTUS. 
The several species of Euschistus, the genus to which the brown 
cotton-bug belongs, have never attracted much attention from 
economic entomologists. Townend Glover a briefly described a Pen- 
tatomid which with little doubt belongs to this genus and noted that 
the species was abundant on cotton in Georgia in 1854 and in Florida 
in 1855,. piercing the bolls and sucking their juices. The species 
referred to is probably Euschistus punclipes Say (variolarius Pal. 
Beauv.),as it is this one which the same author figured with the 
insects that attack young bolls in his " Manuscript Notes from my 
Journal." b The late Dr. Wm. H. Ashmead c recorded E. pyrrlwcerus H. 
Schf. as not of rare occurrence in cot- 
ton fields in Mississippi and noted that 
it punctures new shoots and terminal 
branches. 
So far as known to the writer these are 
the only published records of injury to 
cotton by species of Euschistus. Injury 
to tobacco by E. variolarius has been 
reported by Prof. H. Garman/ and by 
Fig. 12.— The brown cotton-bug (Eus- E. fissilis Uhl. to wheat by Prof. F. M. 
cnistus servus): Nymph, first taster. Webster> e Dr . J. A . Lintnei'/ is respOU- 
Enlarged 21 diameters. (Original.) < I 
sible for the statement that the former 
species "feeds upon plants and animals interchangeably." Mr. A. H. 
Kirkland^ has found E. politus to be partly predaceous. 
In Texas E. servus Say is by far the most common representative 
of the genus found in the cotton fields and is the only one upon which 
special observations have been made in connection with the studies 
reported upon in this paper. The species was described in 1831 
under the name Pentatoma serva. No observations have heretofore 
been recorded on the biology of the insect. Euscliistus impictiven- 
tris Stal and E. tristigmus Say are the only other members of the genus 
which the writer has found upon cotton. 
«U. S. Agricultural Report for 1855, pp. 93-94. 
& Plate 16. 
c Insect Life, Vol. VII, p. 320, 1895. 
<*Bul. 66, Ky. Agr. Exp. Sta., pp. 33-34, 1897. 
eRep. Dept. Agr. for 1885, p. 317. 
/2d Rep. N. Y. St. Ent., p. 146, 1885. 
044th Ann. Rep. Sec. Mass. St. Bd. Agr., 1896, pp. 406-407, 1897. 
