^'- ^-J EILEY AND MONELL OX APIIIDID^. 29 



(Id. "Wings hyaline. 

 e. Apical joint of antenna- a little longer than the sixth. Veins whitish. 



. . C. hi/alintis, n. sp. 



ee. Apical joint of antennae three times as long as the sixth. First and sec- 



onddiscoidals black C. hetula-cokns,!!, si^. 



cc. Nectaries not percejitible. 



(?.Wjngs hyaline C. ca,v/«>, n. sp. 



eld. \ eins bordered with browu 5^. c. quercieola, n. sp. 



Calliptekus ULMiFOLir,n.sp.-Pale whitish-yellow. Apterous indMduals : Tubercn- 

 lur, with capitate hairs, which disappear when the insect acquires wincr.s. Wincjed in- 

 dn;duah: Antenm^ as long as the body; third, fourth, and soDietimes°the iifth joint 

 Slightly dusky at apex; apical joint a very little longer or shorter than the sixth 

 ^^ uigs hyaline ; all of the veins, and especiaUy the stigmal vein, subhyaline. Dorsum 

 with four long, spine-like tubercles on its basal portion, and with various shorter 

 tubercles on the apical portion. Length 1.77°iin; to tip of wings 3.04mm. 



On the under side of leaves of Vlmus americana, May— June. Closely 

 allied to the European C. quercus, which has also four dorsal tubercles. 



Callipteeus avalshii, u. six— Winged form: Bright yellow. Antenuaj, with the 

 tips of joints 3 to 6, black; seventh joint more than twice as long as the precedino- 

 Thorax with a lateral black vitta extending from the eye to the wing-insertions 

 Femora pal6 whitish-yellow; fore tibise black; middle tibiiB faintlv dusky" hind tibijij 

 more dusky than the middle pair. Tarsi and tips of tibiaj black. Nectaries yellowish 

 half as long as the tarsi. Wings hyaline. Front wings with the entire costa as well as 

 its uervures black to the tip of the stigma, whence there extends a marginal dusky 

 vitta, as wide as, or a little wider than, the costa at base and middle, but^tapering at 

 the tip and extending a little beyond the upper furcal of the cubitus. The stigmal 

 vein lies entirely in this vitta, and curved so as to make the width of the marginal 

 cell just equal to the distance between the apex of the stigma and that of the stigmal 

 vein. Hind wings with a dusky costal vitta extending to the tip of the wing. Eeutain- 

 iug veins of both wings slender and pale dusky. Length 1.27™™; width of abdomen 

 O.r/"'"; length of wing 1.77— 2.03™'"; to tip of Aviugs 2.28—2.54™™. 



May— July ,• Saint Louis, Mo. 

 On the under side of leaves of Quercus rubra. 



Very closely related to C. hella (Walsh), with which it has been 

 hitherto confounded. 



CalliptePvUS BELLA (Walsh). 



Aphis hella, W'llsh, Genera of A"". Am. AphidiP, Phil. Ent. Soc. 18C2. 



In some specimens, a series of capitate hairs can be detected on the 

 margin of the abdomen of the unborn larvae, which can be seen through 

 the sides of the abdomen of the \-iviparous females. The young of some 

 individuals seem to lack these hairs. A similar case has been noticed 

 by Professor Eiley in ScMzoneura fungicola? (Walsh), in which the very 

 young larvae occur with and without capitate hairs. These hairs, on 

 being very highly magnified, appe-ar to be hollow, with a funnel-shaped 

 opening at the apex. 



Length 2.54— 3.0-l'""^5 of wings 3.55— 3.81"'™5 to tip of wings 4.0G— 4.31" 



I mm 



Callipterus asclepiadis, u. six— Winged form : General color yellow. Antennaj 

 filiform, mounted on very short tubercles, as long as, or a little longer than, the body ; 



