Hood—Shidirfiiii Tuludifcrooa. Thi/i^o niipfrrn. I>^i3 
>rahon'iel, Illinois, .Inly 27, lUOS, .1. 1). II., .o fonnilos nn(l('r (load willow 
bark; Urbana, III., Id'bniary 2S, ISSl), Dr. .lolin Martin and ('. A. Hart, 
2 males “ nnder boards” (111. State Dab. Nat. Hist., .\cc. No. 14740). 
.Ml the speeiniens reciU'ded al)ove an' inaero|)t('rons. 
.\ slide of tlin'e h'tnales was compared with the type of hrarlri in the 
colleeti(^n of tla' Massachns(>tts Ajrricnltnral (lolle^e by .Air. lb lb Darker, 
who pronounced the idi'ntilication corri'ct. 
The thrijts recorded by Shnll from Huron Connty, Michiiian, nnd(*r 
the liana' Tricholliripa beachi is the macropterons fi'inale of Trichothnpa 
america)mx Hood, as noted on page 154 of the |>resent paper. 
. Trichothrips karnyi Hood. 
toil, 'rricliolhrips honnji Hood, Ins. Tn.s. Alens., vol. 11, p. 20, Dl. I, 
tigs. 1-:’.. 
.\l the tinu' of describing this spc'cies tiu* wi'iter separated Iroin the 
types a large series of a closely allied bnt supposedly distinct lorin from 
DennsyIvania, which he inti'iided to describe later as a new species. .\ 
more critical study of these specimens and ol a large series ol both sc'xes 
received from Air. H. Al. Rns.sell shows, however, that these forms can 
not always be separated with certainty, though the e.Ktremes ,«eem 
snlliciently different in .strnctnre and general appearance to reciniro 
separate designations. The characters given in the following table, 
though variable, will allow the new form to be separated nnder the name 
Trichothrips karyii/i majorsnhsp. nov. ( Dlah' :'>, tig. 1 ). 
(A. Tibia'of middle and hind legs largely hlackish brown ; third antennal 
.segment darkened a[)ically. ) 
(a. Head distinctly longer than liroad; antennal segments 4-(i 
lilackish brown, with i)edicels abruptly pale yellow; :! yellow, 
infnscate apically, distinctly paler than 4. ) 
I). Head produced beyond eyes, the distance from their anterior 
margin to the most anterior jiortion of frontal costa about 
one-si,\th the width of head. Segnu'iit I of antenna dis¬ 
tinctly larger in dorsal asiiect than the second, its expost'd 
portion distinctly l(.)nger than wide; segment about 2.'.> 
tiiiHW as longaswide, its sense cones short and about halfas 
longas the longest apical bristles; segmentH about .7 times 
as longas 7. Tube about .85 as long as head, much darker 
in color at t>ase than at apex. Cieneral color dark blackish 
brown, black to the naked eye. Length of living females 
about :’> mm. ; width of prothorax about.5:') mm. Nymph 
bright red in color, the hypodermal pigmentation ])racti- 
cally unbroken. (Newton, Da., Sept., 1911, 11. AI. 
I'nssell). Trichothrips harnpi major snbsj). nov. 
bb. Head not noticeably produced beyond eyes, the distaiux' 
from tiu'ir anterior margin to the most anterior portion of 
frontal costa ahont one-eighth the width of head. Segment 
1 of antenna not larger in dorsal aspect than second, its 
