1862.] 301 



My n-lu:jed fpmalen differed from Dr. Fitch's description only in the shanks 

 being dusky, not "whitish except at their tips." In one or two immature 

 specimens, however, the whole leg was whitish. The four first abdominal 

 joints were larger and subetjual, the rest small. A solitary specimen has 

 the stigmal vein of one wing distinctly bifurcate at tip, as in a specimen 

 of Pemplitgus pyr! mentioned by Dr. Fitch. The wings are slightly fu- 

 mose at tip, and the stigma hunched externally and pale dusky-brown. 



Length to tip of wings .10 inch. Dr. Fitch's insect occurred only on 

 the stems of roasting ears. Probably the normal location of this species 

 is the root, and towai'ds autumn, when the roots become dry and sapless, 

 it betakes itself, to avoid starvation, to the stem of the ear. The differ- 

 ences in color may arise from one insect living underground and the other 

 in the open air, and the differences in the markings from specimens hav- 

 ing been observed in different states of maturity.* The antennae in the 

 living insect were half the length of the body, and in the dried specimens 

 attain the origin of the first discoidal vein when the wings are expanded ; 

 joints 5 and 6 are obtrigonate, and joint 7 is equal to 5 and G put together. 

 The stigma is scarcely more than twice as long as wide. This 9 insect 

 when dried resembles 9 A. crataer/i/olix Fitch, of which I have found 

 S 9 in company with the larva on wild thorn in October, but is distin- 

 guishable by the comparative shortness of its wings, its shorter stigma^ 

 and its somewhat shorter antennae. 



CALAPHIS n. g. 



Antennae long, linear, 7-jointed; 4 shorter than 3, 5 shorter than 4, 6 

 less than one-half as long as 5, 7 slender, twice as long as G. Prothorax 

 more than one-half as long as thorax. Iloney-tubes moderate. Wings 

 steeply roofed and differing from those of Aj^hiti only in the total absence 

 of the 4th or stigmal vein, and in the unusually robust discoidal veins. 



Calaphis betulella n. sp. — Yellow. Antennae attaininaj the' extreme ti])s of the 

 expanded wings, black, joints 1 and 2 yellowish with a black vitta half inside and 

 half beneath; joints 3 — B each white at base; eyes black, with a black line from 

 each to the insertion of the rostrum, which is black; head with a narrow black 

 vitta above, acute in front, commencing between the antennae and attaining the 



* Dr. Fitch has recorded the very curious fact, that Aphis avence is green when 

 it breeds on the leaves, and yellow or reddish-yellow when it is propagated on tlie 

 ear. the females when they first shift their quarters producing at first green and 

 afterwards velluw larvre. 



