208 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxvi. 



Male.— Conivixry to the usual rule, these two specimens are longer 

 than the females,^ being 4.22 mm. (4.34 to 4.10 mm.). They are 

 somewhat more slender, especially through the middle of abdomen. 

 Heads about two and two-thirds times as long as wide; antenna; longer 

 than in female, a))out one and one-lifth times as long as head; relative 

 lengths of segments as follows: 



12^4 ^^ '^ A 

 14 20 42 34 29.5 21. .5 14.5 15.5 



Prothoi-ax nearly one-half as long as the head; fore feujora consid- 

 erably thickened (almost as broad as the head) and each fore tarsus 

 bearing an extremely stout tooth; fore tarsi and inside of tibiffi yellow. 



Abdomen at second segment only two-elevenths as broad as long; 

 tube three-fourths as long as head and very slender. 



Male newly described from two specimens. 



Food 2>lants.—Pinm lops, Jimiperm r!r<j inland, and Ahlcs sp. 



Found on either green or dry branches in spring and early fall and 

 hibernating under bark. 



Ilahltat.—^env Washington, District of Columl)ia; Amherst, Massa- 

 chusetts. » 

 UNCLASSIFIED DESCRIPTIONS. ^ 



LIMOTHRIPS TRITICI (Fitch) Packard. 



"The females alone are winged, the males being wingless and closely 

 resembling the larvfe. The body of the female is smooth and shin- 

 ing, uniformly greenish yellow, with no other markings; the legs are 

 a Tittle paler toward the articulations. The antennae are eight-jointed, 

 slightly longer than the head; the two basal joints are the largest; the 

 three succeeding joints equal, regularly ovate, the sixth a little longer 

 than the lifth; seventh and eighth minute, seventh a little shorter than ! 

 eighth, each joint bearing four large bristles. This species differs 

 from the European Z. ceraUum, in having but eight joints, the seventh 

 and eighth being minute, and with no intermediate short one, as) 

 described in the European insect. 



"The prothorax is square, the scutellum short, crescent-shaped, and 

 the abdomen is long and narrow, smooth and shining, ten-jointed.! 

 Length, four one-hundredths of an inch, or less than half a line. 



"The larva (fig. 2) is entirely greenish yellow, the head and protho- 

 rax of the same color as the rest of the body. The eyes are reddish.1 

 The feet and antenm\3 are whitish, not annulated, as in L. ceraUum. 

 The feet (tarsi) consist of but a single joint ending in a point. 



"The male differs from the larva in having two- jointed feet (tarsi)!! 

 and seven-jointed antenna?, those of the larva being four-jointed. The 

 second joint is exactly l)arrel-shaped, with two ridges or lines sur-, 

 rounding it, third and fourth joints long, ovate, the third being a lit-jj 



