long's second expedition. 257 



SARGUS Latr. Meig. 



1. S. DECORUS. — Front blue; thorax green ; tergum greenish 

 golden ; feet pale yellow. 



Inhabits Pennsylvania and East Florida. 



Hypostoma and vertex blackish ; proboscis yellow ; antennae 

 dusky yellowish ; third joint darker ; frontal tubercles with a 

 white reflexion ; wing dusky, stigma distinct; poisers pale yel- 

 low; pleura blackish-piccous ; feet yellow; posterior tarsi dusky; 

 abdomen slender, widest at tip, gradually [377] attenuated to 

 the base, and with pale yellowish-brown hair. 



Length about three-tenths of an inch. 



This species is very closely allied to the ^S*. aio-atus 3Ieig. 

 Fabr., but it is smaller, and the feet are dissimilar ; it may, how- 

 ever, prove to be a variety of that species. 



2. S. DORSALis. — Black, eyes brassy, with a green line; feet 

 white, tibiae and tarsi above blackish. 



Inhabits Kentucky. 



Stemmata approximate on the vertex ; eyes brown, when re- 

 cent brassy-green tinged with red or pui-plish, a broad, green, 

 longitudinal line across the middle; antennae whitish at base; 

 feet white ; tarsi black at the tip ; anterior and posterior tibiae 

 black above ; wings dusky nervures deep brown, carpus distinctly 

 marked by an oblong, opake, brown spot ; abdomen oval, mid- 

 dle of the two or three basal segments of the tergum and ventei: 

 whitish. 



Length of 9 one-fifth of an inch, % rather less. 



The male is very similar to the female, but is a little smaller. 



This species is allied to the genus Vajipo Latr., by the ner- 

 vures of the wings, the nervure between the three which radiate 

 from the central joint being altogether wanting, but the second 

 joint of the antennae resembles that of a Sargm, the third joint 

 is deficient in my specimen. In general form it resemble S. po- 

 litus Linn. 



[Is a Beris according to Wiedemann. — Sacken.] 



PARAGUS Latr. 



P. 4-FASCTATUS. — Black ; tergum with four yellow bands : , 

 costal margin of the wings fuscous. 



17 



