Allantus in the United States. 257 



Sp. 40. A. pannosus. Say. Bost. Jour. I. 218. ? $ 

 " Black ; mouth white ; feet varied with white. ( 9 Long. 

 0.30 in. $ Long. 0.25 in.) 



" Inhabits Indiana." 



The dark wing-scale and white edge of collar ; immac- 

 ulate pleura ; white coxae, with a black spot above and 

 below ; anterior legs white below, and posterior legs with 

 black femora and a band on tibiae of female, and a white 

 line on male ; and base of ultimate joints of the tarsi white ; 

 are the exterior marks of this species, which I have not 

 seen. 



Sp. 41. A. externus. Say. West. Q,uar. Rep. II. 72. 9 

 " Black ; tibia white on the exterior side. Length nine 

 twentieths (0.45) of an inch. 



" Inhabits Missouri. 



" 9 Body deep black ; head, with a spot each side on 

 the nasus, and base of the mandibles, white ; wings fulig- 

 inous ; nervures black ; thighs at tip above, incisures of 

 the coxae, exterior side of the tibia, and tarsi, white ; pos- 

 terior feet robust. 



This I have not seen. A. flavicollis seems somewhat 

 like it. Its size of body and posterior legs are sufficient 

 to distinguish it from the following species. 



Sp. 42. A. epinotus. Say. Bost. Jour. 1. 215. 9 $ A. 

 sambucci. H. Cat. " Black ; tergum with a white band at 

 base ; feet varied with white. 



" Length, ^ three tenths, 9 less than two fifths of an 

 inch. 



" Body black ; mouth white ; tongue piceous ; thorax, 

 with the posterior edge of the collar, wing-scale, posterior 

 edge of the scutel, and two minute dots behind it, white ; 

 wings with brown nervures ; stigma somewhat inflated i 

 tergum with the posterior margin of the first segment 

 white ; feet white ; coxae with a dilated line before and 

 behind ; anterior and intermediate thighs and tibiae with a 



JOUBKAL B. S. N. U. 33 D£C£MB££, 1860. 



