28 BULLETIN UNITED STATES GEOLOGICAL SURVEY. \Tol.Y. 



and in some forms of Fhylloxera Ulleyi the tubercles are proportionally 

 as great. The fore tibise have each a short robust tubercle on the front 

 etlge, close to the knee. Hairs on the dorsum of apterous individuals 

 capitate, i^ormal specimens in this locality have the cubitus and stig- 

 ma! veins lying in more or less distinct brown bands ; in variety liycdimis, 

 the wings lack these brown shadings, but do not differ othermse. 



Caliipterus, Koch. 



Rostrum short. 



AntenntB not on frontal tubercles, or else on very short ones, seven-jointed; tran- 

 sition from the sixth to the seventh joint very gradual. 



Nectaries short, often scarcely percej)tible. 



Style short, enlarged at a^ex. 



Wings deflexed ; front wings with the stigmal vein much curved, not robust, 

 usually more or less hyaline; cubital vein springing from near the base of the 

 stigma ; second discoidal sinuous. 



Hind wings with two discoidals. 



Body elongate, slender, of very pale colors. 



Habits si>oradic. 



This genus seems to form a sort of transition between the Apliidince 

 and Lachninw, and should be placed in the former section principally on 

 account of the shortness of the rostrum. Several divisions of Caliipterus 

 have been proposed, based on the j-elative length of the sixth and sev- 

 enth antennal joints, but in such species a-s I have examined this char- 

 acter seems particularly variable and not deser^dng the importance which 

 has been attached to it. In the species known to me, and probably in 

 all European species, the wings are deflexed, but according to Fitch the 

 species described by him have the wings horizontal. I was at first 

 inclined to doubt the accuracy of this statement, but as it is a character 

 very easy to observe, and as Dr. Fitch mentions it on two separate occa- 

 sions, I do not see how he could possibly have made a mistake. Further 

 investigation may possibly prove that his si)ecies do not ai)pertain to 

 this genus. As I have never been able to find viviparous apterous 

 females, I consider it very iDrobable that insects belonging to this genus 

 acquire wings before producing living young. 



A. Dorsum of winged individuals Avith spine-lihe tubercles . '. C. tilniifolii, n. sp. 



AA. Dorsum without spine-like tubercles. 

 a. Marginal cell dusky. 



h. Middle tibise pale yellow. Femora pale yellow C. wahliii, n. sp. 



1)1). Tibits black. Apical portion of femora blaick C. hella (Walsh). 



aa. Marginal cell hyaline. 



J). Wings with transverse, shaded bands. 



c. Abdomen with conspicuous dusky spots C. discolor, n. sp. 



cc. Abdomen yellow, concolorous, or with very faint transverse bands. 



C. aselepiadis, n. sp. 

 hb. Wings subhyaline. 

 c. Nectaries distinct. 

 d. Dusky shadings at tips of veins; a diisky mark at base of stigmal vein. 



C punctata, n. sp. 



