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402 



Sayh Descriptions of 



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Bodi/ black : head beneath the antennae, ferruginous : 

 orbits yellow : antenn<B ferruginous, dusky about the 

 middle; terminal joint paler : co//ar yellow: <^ or ax each 

 side over the wings, with a dull ferruginous margin ; be- 

 fore the wings a yellow spot : wing-scale honey-yellow : 

 wings slightly dusky, particularly the terminal margin : 

 nervures honey-yellow : scutel sub-bi-lobate, yellow, line 

 on the middle posterior margin ferruginous : metathorax 

 near the scutel with a transverse line and an irregular, 

 longitudinal, quadrate spot each side behind, yellow : 

 tergum with a yellow band, gradually contracted towards 

 the middle, and obsoletely margined with ferruginous, 

 before the middle of each segment ; anterior band a little 

 undulated or denticulated : pectus with a triangular, yel- 

 lowish spot over the fore-feet: cot^^ black, with a yellow 

 spot : thighs ferruginous, blackish behind : iibite and tarsi 

 ferruginous and yellow : venter with two yellowish bands ;- 

 towards the tip, honey-yellow. 



Length 9 nine twentieths of an inch. 

 ^ Ferruginous ; orbits and head before, yellow ; an- 

 tennas blackish towards the tip ; first joint yellow beneath ; 

 collar, line over the wings, two obsolete ones in the mid- 

 dle, wing-scale excepting a dot in the middle, yellow ; 

 scutel undivided, yellow ; metathorax in greater part, yel- 

 low ; abdomen yellow, posterior margins of the segments 

 black, sub-margins ferruginous. Rather more slender 

 than the female. 



2. N. bisignata, Nob. (Appendix to Long's Second 

 Expedition). The male has the head black, with the 

 nasus and mouth yellow ; antennae beneath, rufous ; the 

 thorax has hardly any appearance of ferruginous ; but the 

 scutel in some specimens is of that color; the thighs, par- 



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