20 BULLETIN UNlXr.D STATES GEOLOGICAL SURVEY. [Yol.Y. 



di vidua^s with the antennra as long as, or a very Kttle longer than, the body, mounted on 

 conspicuous tubercles which are not porrect; apical joint long and threadlike, longer 

 than the fifth, and about live times as long as the sixth. Honey-tubes very long, dusky 

 at apex. Tail, when extended, about twice the length of the tarsi, jjale green. Length 

 3.04™'"; to tip of wings 4.82™"'. 



Ou petals and stigma of Tulips, April ; Saiut Louis, Mo. 



I believe that no other Apliididcc have been found on Liliaceous plants, 

 excepting an undes(;ribed Aphis collected by Prof. Eilcy on Yucca flowers 

 at Greeley, Colo. 



SiPHOXOPHOKA TILI.E, n. sp. — ApteroHS individuals : Plead and thorax yellowish or 

 yellowish-green; abdomen green ; nectaries with the basal one-third green, apical por- 

 tion black. • Winged individuals : Head and thorax reddish-yellow ; abdomen and stylo 

 green. Antennae about twice as long as the body, mounted on consx)icuous tubercles. 

 Wings hyaline. Stigma yellowish. Nectaries subcyliudi'ic, four or live times as long 

 as the tarsi. Length 2.54-3.04'^"'^ ; to tip of wings 5.08'""'. 



On the under side of Linden leaves, causing them to curl. 



SiPHONOPHOKA LipaODEXDi!!, u. sp. — Winged female : Head, thorax, and two basal 

 joints of the antennae red. Abdomen green. Nectaries and apical portion of the an- 

 tenna} black. AntenuiB much longer than the body ; the tubercle near the apex of the 

 fifth joint very distinct. Nectaries usually slightly incrassated at the base, about four 

 times as long as the tarsi. Style slender, when fully extended one-third as long as the 

 nectaries, more or less greenish. Wings hyaline. Stigma long, much tapered at base 

 and apex; apex acute, nearly oj)posite the middle of the stigmal vein. Distance 

 lietween the apex of the stigmal vein and the apex of the upper forklet equal to hall 

 that between the forklets. Length 2.54"^"^; to ti}! of wings 4.57""^'^. 



On Liriodendron tidipifera., June, July 5 Saint Louis, Mo. 

 The leaves on which this species lives do not curl ui) as in S. tiUa', but 

 soon turn brown and drop off. 



The following form also occurs on Liriodendron^ sometimes in company 

 with the above, but more frequently by itself. I can find no structural 

 diflerences between the two ; but as it seems to present the same differ- 

 ences in coloration in all its stages, it is possible that it may deserve to 

 rank as a distinct species. 



Yar. PvUFA. — General color pale reddish. Abdomen vrith the ground-color green, the 

 margins red, and a red longitudinal stri])e in the middle. Stigma whitish or slightly 

 dusky. Tibifie, tarsi, antenniE, and nectaries black. Style reddish. 



June, July. Saint Louis, Mo. 



AYalker mentions the occurrence of a red variety of B. rosoj (Linn.). 



SiPHOXOPHORA CRAT.EGI, u. sp.— Jj;fe?-o?(s individuah : General color pale yellowiiih- 

 green, with a darker green mark on each side of the base of the abdomen and scarcely 

 perceptible, darker green, irregular marks near the base of the nectaries. Antenn;© 

 about three times as long as the body, black, Avith the basal third pale greenish; 

 frontal tubercles fully as long as the second o,utennal joint ; seventh joint tapering to 

 an exceedingly slender point, in the adult apterous individuals as long as the fourth, 

 fifth, and sixth joints taken together. Nectaries long, subcylindric, extending beyond 

 the tip of the abdomen, pale, almost translucent. Style half as long as the nectaries, 

 pale yellowish. Legs entirely greenish. Length 2.28""". 



