OF NATURAL HISTORY. 779 



spot : thighs ferruginous, blackish behind : tibise and tarsi ferru- 

 ginous 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; antenna? 

 blackish towards the tip ; first joint yellow beneath ; collar, line 

 over the wings, two obsolete ones in the middle, wing-scale ex- 

 cepting a dot in the middle, yellow ; scutel undivided, yellow ; 

 metathorax in greater part, yellow ; abdomen yellow, posterior 

 margins of the segments black, submargins ferruginous. Rather 

 more slender than the female. 



2. N. BisiGNATA nob. Appendix to Long's second Expedi- 

 tion. — The male has the head black, with the nasus and mouth 

 yellow ; antennae beneath, rufous ; the thorax has hardly any ap- 

 pearance of ferruginous; but the scutel in some specimens is of 

 that color ; the thighs, particularly [403] the posterior pair have 

 more black than those of the female. [Ante 1, 239.] 



Var. Abdomen rufous, immaculate. 



EPEOLUS Latr. 



E. FUMIPENNIS. — Black; thorax bilineate, ferruginous all 

 around. 



Inhabits Mexico. 



Body densely punctured, black : head carinate between the 

 antennae : antennae honey-yellow at base, beneath : labrum with 

 an obsolete, minute, ferruginous dot each side : mandibles honey- 

 yellow at base : thorax with two slender whitish abbreviated lines 

 and whitish lateral edge : collar with a ferruginous disk, con- 

 tracted in the middle ; a ferruginous dot before the wings : wing- 

 scale and scutel ferruginous : wings fuliginous : tergum, first 

 and second segments with a yellow band, the first broader and 

 widely interrupted ; remaining segments with a whitish band, 

 the last segment with the addition of an obscure rufous terminal 

 margin : tibiae and tarsi honey-yellow. 



Length three-tenths of an inch. 



The lunatus nob. also has a bilineated thorax, but it is a larger 

 species, has a whitish spot around the base of the antennae; 

 lunated spot at base each side of the tergum, &c. Smaller than 

 mercatus F. and scutellaris nob. 

 1837.] 



