OF PHILADELPHIA. 407 



2. L. BASALis. — Wings sanguineous at base. 

 Inhabits Missouri, Indiana and Massachusetts. 



% Head cupreous ; thorax cupreous, with black sutures ; pleura 

 with yellowish, oblique lines; wings with quadrangular cellules 

 and an oblong dusky carpus ; basal fourth, bright sanguineous ; 

 pectus yellowish ; feet black ; tibise exteriorly dull yellow ; abdo- 

 men steel-blue, with slender white incisures; beneath yellowish, 

 with a black middle line ; forceps arcuated, spinous above, with a 

 large double tooth beneath ; tip obtuse. 



Length one inch and three-fourths. 



9 Body green ; head with a yellow, abbreviated line on the 

 anterior orbits, yellow nasal margin and labrum; thorax with a 

 lateral yellow vitta ; wings tinted with yellow-brown towards the 

 base ; [36] carpus white; abdomen with a slender, longitudinal line, 

 and slender basal annulation on each segment; beneath whitish, 

 with a black line ; feet black ; thighs yellowish beneath ; tibia? 

 yellowish above. 



Length over one inch and three-fourths. 



Of this fine species, Mr. Nuttall presented me two individuals 

 which he obtained from Missouri. The bright sanguineous color 

 of the wings in one sex terminates abruptly, and in the other the 

 very pale yellowish-brown color of the same part gradually disap- 

 pears towards the middle. 



In the A. caia Drury of South America, (xl. Bri(jhtioelU Kirby?) 

 the inferior pair of wings have a reddish spot at tip. 



It is very abundant in some situations in Indiana, and is easily 

 taken. 



[This is Hetxrina americana Fabr. Ent. Syst. Suppl. 237. — 

 Uhler.] 



3. L. EURINUS. — Wings immaculate ; forceps curved, inward, 

 bidentate. 



Inhabits Massachusetts. 



% Body blue, somewhat varied with greenish and violaceous ; 

 pectus beneath yellowish; antennae, second joint shorter than the 

 the third ; labrum and each side of the mouth yellowish ; thorax 

 with a yellow vitta, behind bifid and divaricated ; between the 

 wings yellowish ; pleura chiefly yellow ; wings with a slight tinge 

 of greenish-yellow; stigma blackish; abdomen blue, segments 

 1839.] 



