NORTH AMERICAN THYSANOPTFAiA—HIXDS. 197 



AbdonuMi large and stout, about four times as long as liead, as wide 

 as niesothorax; sides nearly parallel to sc^venth segment, from tliei-e 

 tapering roundly to base of tube; segments overlapping about one- 

 third. Tube four-fifths as long as head; sides straight and convcn-ging 

 slightly; breadth in middle^ one-seventh that in middle of abdomen; 

 terminal circlet of bail's about the length of the tube, very slender. 

 S})ines on sides of al)domen blunt; abdomen. qu.it(Min if ormly vidlowish 

 brown (dark brown where segments overlap). 



Described from three females. 



Coti/2)<\—Q^t. No. 6332, U.S.N.M. 



M(ih\ — Males about six-sevenths as large as femal(\s. Cheeks 

 slightlv fuller; rc^lative lengths of antennal segments as follows; 



7.9 



Fore femora larger than in female and term'inating in two teeth at 

 ti}) within; fore ti})ia' have each a small tooth near base within; teeth 

 on fore tarsi large. (The teeth upon femora and tibia? are not found 

 at all in the female of this species.) Tube at middle about one-sixth 

 the width at middle of abdomen; abdomen tapering slightly. 



Described from five males. 



Cotyp^'.—i^^t. No. 6332, U.S.N.M. 



Food plajit^i. — Taken on various grasses, clover, and TJIjhu.^ nionfaua 

 var. jjenditla. 



Ilahltat. — Amherst, Massachusetts. 



This species is named for Dr. Henr\' Uzel, of Koniggratz, Bohemia, 

 ^^•hose Monograph of the Order Th3'sanoptera is by far the best work 

 that has been published upon this order. 



PHLCEOTHRIPS PERGANDEI, new species. 

 Plate VIII, ligp. 85, m. 



Fetiialc. — Length 1.6S mm. (a])dominal segments overlapping for 

 about one-fourth their length); width of niesothorax 0.-12 mm. Gen- 

 eral color 3'ellowish l)rown. with considerable irregular red hypoder- 

 inal pigmentation. 



Head about one-sixth longer than wide, widest close ])ehind the 

 eyes, rounded in front; cheeks slightly curved and bulging behind 

 eyes, converging slightly posteriorly, set Avith a number of short, 

 stout spines borne upon (juite })rominent warts; post-ocular bristles 

 long and knobbed. Eyes about medium in size, slightly elongated, 

 finely faceted; ocelli quite large, distinct, subapproximate, reddish 

 yellow with dark red crescentic margins, situated well forward upon 

 vertex, which is slightlj^ elevated. Mouth cone (juite long, reaching to 

 back of prosternum; lal)rum sharply pointed and <)\erreaching the 



