November— December jSSS.] 



PSYCHE. 



129 



and proximal portions of tibiae yellow- 

 ish. Cauda long. Cornicles long, black, 

 contracted at middle, dilated at tip. 

 Basal wing-veins and tegulae light yel- 

 lowish. Beak reaching posterior coxae, 

 yellow at base, becoming brownish 

 toward apex. 



Described from one specimen taken 

 ill coptcla on Solidago^ iS October 

 1S87. 



Oviparous female. 



Width of body .... 1.2 mm. 



Length of body .... y.o mm. 



" " antennae . . 4.0 mm. 



" " cornicles . . 0.7 mm. 



" " Cauda ... 2.5 mm. 



Above clear reddish-brown, slightly 

 darker on thorax. Cauda light yellow, 

 with a few rather long hairs. Cornicles 

 black, long, large at base and slightly 

 tapering apically. Antennae blackish, 

 very long, with sparse stiff' hairs. Un- 

 der surface much like upper. Rostrum 

 dark brown, reaching to anterior mar- 

 gin of posterior coxae. Legs very long ; 

 coxae unicolorous with under surface ; 

 femora and tibiae light brown (very 

 much lighter than body) with black 

 tips ; tarsi black. Abdomen large. 



Described from one specimen (hav- 

 ing ten well developed eggs in the ab 

 domen) taken on Lactuca or Mulge- 

 diu7n. 3 2 October 1S87. 



SCHIZOXEURA CORNICOLA (WaLSh). 



Whether the species described by 

 Walsh under the above name is the 

 same as the European ScJiizoneura 

 corni, or not, I cannot tell, nor am I 

 certain that the forms described below 



are the same as those found by Walsh, 

 whose description (Proc. Ent. soc. 

 Phil., vol. I, ]o. 304) is brief and 

 was drawn up from dried specimens. 

 There is every probability, however, 

 that they are the same. Walsh doubt- 

 fully refers the species to the genus 

 Eriosoma., and states that "numerous 

 [winged ?] individuals unaccompanied 

 by anv flocculent matter, and so far as 

 I recollect by larwae, occurred in Sep- 

 tember, on the lower side of the leaves 

 of the red osier dogwood." 



Thomas quotes Walsh's note and 

 refers the species to Schizoneura. but 

 does not mention having seen the 

 insect. • 



My observations upon the species 

 began about the iniddle of October, 

 1887, when winged viviparous females 

 were abundant upon the under sur- 

 face of the leaves of Cormis sanguinea 

 and C. sericea., and were just begin- 

 ning to establish colonies. No other 

 form was present, which led me to 

 think that these winged individuals had 

 migrated from some other species of 

 plant, as had the}^ been developed on 

 Cormis there would probably have 

 been indications of it — either cast skins 

 or belated colonies. These winged indi- 

 viduals were occasionally seen upon 

 other plants, but their presence was 

 evidently accidental, as none of them 

 were establishing colonies. 



On 24 October, the dogwood 

 leaves were covered with colo- 

 nies of the three forms, — winged 

 viviparous females {pscudogyna ptipi- 

 fera)., apterous males, and oviparous 



