OF NATURAL HISTORY. 091 



Body pale ferruginous yellow : antennaj black, ferrugiaous at 

 base, and with white semi-annulus on the middle: scutel with its 

 basal angles connected with the thorax by an elevated line : 

 wings yellowish, a black band before the middle, another beyond 

 the middle, connected in the form of a v with the black apical 

 margin; central cellule pentangular, its basal and apical lines being 

 nearly parallel ; inferior wings with a dot in the middle, and 

 apical margin blackish : tergum with the third segment dusky 

 or black at its base : oviduct black, nearly as long as the abdo- 

 men : posterior tibise blackish at tip. 



Length less than three-fifths of an inch. 



The remarkable resemblance which exists between the present 

 insect and the li/asciafits nob. in point of color, renders it neces- 

 sary, in order to prevent mistake, that we should observe that in 

 the bifasciatus the oviduct is not half the length of the abdomen, 

 and the central cellule of its wing joins the radial cellule in an 

 acute angle, its basal and apical lines being confluent at the 

 point of the junction with it, 



8. C CESTUS. — Wings hyaline, fasciate ; inferior wings dusky 

 at tip. 



Inhabits Indiana. 



9 Body rufous, almost sanguineous, opake : antennas, excepting 

 the two basal joints, black with a white annulus in the middle ; 

 wings hyaline, a blackish band on [235] the middle, abbre- 

 viated before ; another blackish band nearer the tip abbreviated 

 behind; tip, margin dusky ; second cubital cellule pentangular, 

 its basal and terminal lines not parallel : metathorax a httle ru- 

 gose each side with a short compressed tubercle each side on the; 

 declivity : tergum with the basal segment polished ; third seg- 

 ment black at base : oviduct nearly as long as the abdomen : 



. . . i^''i' - 



pleura with the incisures punctured : posterior tarsi a little fpaler. 



Length half an inch. ^ >. 



This is very much like C. caUpfcriis nob., but the^wmgs are 

 hyaline ; the cellules somewhat different; the in^rjor wings de- 

 stitute of a central spot ; the body is of a deegjufous;' color, &c. 



9. C. PLEURiviNCTUS. — Black ; segments of the"terguaijL»af 

 gined with white. i„ -i 



Inhabits United States. ,.. 



1835.] ^ 



