LONGS SECOND EXPEDITION. 203 



ORDER NEUROPTERA. 



BABTIS Leach. 



1. B. bilineata. — Large, pale ferruginous ; inferior wings 



margined behind with dusky; tergurn fuscous with a double 



series of whitish lines. [304] 



Inhabits St. Peter's river. 



Head above somewhat fulvous ; beneath and front yellow ; 

 thorax, first segment yellowish-brown, blackish each side and 

 before; second segment pale brownish, a little tinged with rufous 

 and with indistinct oblique whitish lines, proceeding from the 

 longitudinal impressed line ; two brown spots on the middle 

 placed transversely ; wings hyaline, whitish, with fuscous ner- 

 vures ; posterior margin of the inferiores fuscous ; tergum fus- 

 cous ; lateral margin whitish ; posterior edges of the segments 

 white above ; a double series of whitish, oblique, dilated, abbre- 

 viated lines. 



Length $ to tip of the wings one and three-tenths of an 

 inch. 



This is much the largest species of this country I have seen ; 

 it appeared in considerable numbers. 



[Belongs to Palingenia, and is P. Umbata Guer. Icon. Kegne 

 An. pi. 60, fig. 7.— Uhler.] 



2. B. alternata. — Wings whitish, nervures fuscous ; tergum 

 fuscous, segments whitish at their bases. 

 Inhabits North-west Territory. 



Body fuscous ; head on the anterior margin and genae white ; 

 thorax pale brownish-livid, yellowish near the scutel ; wings hya- 

 line, with a whitish reflexion, nervures not margined; pleura and 

 pectus varied with yellowish; feet pale ochreous, a fuscous 

 annulus near the tip of the thighs; tergum fuscous; segments 

 whitish at base, one or two ultimate segments with two whitish 

 longitudinal lines ; venter whitish, each segment with two oblique 

 lines and two intermediate points, black; seta whitish, with 

 regular fuscous spots alternating. 



Length of the body % from two-fifths to half an inch. 

 Closely allied to the femoratus, nobis,* but may be distinguished 



* Western Quarterly Reporter, vol. 2, p. 162. — Ante. p. 171. 



