335 



seta longer than the head. Head narrower and much shorter above than 

 the thorax, somewhat inflated on the anterior edge; thorax convex before, 

 nearly transversely incised behind, wider than long. Wing covers conni- 

 vent and nearly vertical at tip. Recently transformed. The pupa skins 

 numerous under the leaves. 



This is an lassus, according to the characters given by St. Fargeau and 

 Serville, Encyclop. Method., Insectes, X, pp. G02 and 612, and a Bythoscopus, 

 according to Germar, Rev. Entomol., I, p. 180. Anal valves of <5 recurved. 

 Appears to belong to Fitch's genus Empoa. 



Aphis caryse Harr. 



Stylo nullo, corniculis brevissimis, corpore cinereo, dorso nigro-maculato ; 

 femoribus brunneis, tibiis, tarsis antennisque nigris. 



Body with a cinereous pruina, which is somewhat evanescent on the 

 thorax, so as to exhibit the black color, more or less, on this part. Dorsum 

 of the abdomen with four longitudinal rows of transverse black spots (or 

 four on each segment). Style obsolete; cornicula very short, tuberculiform, 

 rostrum extending only to the middle of the third segment ; wings fuligi- 

 nous, bases ferruginous brown, dilated, costa and nervures black ; legs black, 

 hairy; the posterior tibia? remarkably so; femora, except at tips, ferruginous 

 brown. Length of body .25, of upper wings .35, of body and wings when 

 at rest .43, expansion of wings .72 of an inch. 



Larva?, pupa? and winged insects found on the limbs of the Carya porcina, 

 July 1, 1831. 



Aphis salicti Harr. 



Stylo nullo, corniculis brevibus fulvis, corpore nigro, immaculato, alarum 

 venis pedibusque fulvis. 



Black, immaculate ; wings hyaline, the veins, the antennas, corniculse 

 and legs fulvous. Body black, immaculate; first and second joints of the 

 antenna? black, third fulvous at base, remainder fuscous; cornicula?, short, 

 fulvous ; legs fulvous, tibia? at apex and tarsi fuscous. Length about one 

 line. Expanse of wings above four lines. 



Inhabits the willow, living on the under side of the extremities of the 

 branches. Oct. 1, 1837. 



This species cannot be identical with A. solids Linn., which has the body 

 spotted with white. 



DIPTERA. 



Musca harpyia Harr. Catal. 



M. fronte albicante ; thorace cinereo-quinquelineato ; abdomine maribus 

 melleo,lasidiaphano, niyro-lincato ; fceminis cinereo, nigro-trilineato ; alts baai 



