Allantus in the United States. 245 



9 Head and thorax black ; antennae long and thick- 

 ened in the middle; joints diminishing equally in length ; 

 clypeus moderately emarginate ; clypeus, labrum, base of 

 mandibles, and the palpi, yellow; mandibles black at tip; 

 wing-scale, edge of collar, scutellum, two dots behind, and 

 a longitudinal line on pleura near base of intermediate 

 legs, bright yellow ; abdomen dark rufous, two basal seg- 

 ments black ; legs yellow ; a black line from middle of 

 anterior tibiae above to feet ; half of posterior coxae, the 

 apical two thirds of femora, apex and base of tibiae, basal 

 half of first joint of tarsi, and all the feet, black; wings 

 faintly smoky; nervures piceous; basal half of stigma 

 pale; second submarginal cellule lengthened. 



Hab. Connecticut and Massachusetts (H. Coll.). 



Three specimens examined. One from Massachusetts, 

 in the Harris Collection, is larger than the others, and the 

 abdomen is wholly rufous. 



Sp. 19. A. rufescem. Nov. spec. Antennae, orbits, 

 abdomen, and legs, dark rufous ; vertex and thorax black ; 

 face, collar, and scutel, yellow. (Long. 0.40 in. Ex. alar. 

 0.80 in.) 



9 Color dull; head wide, and slightly roughened at 

 apex; antennae dark rufous, rather stout, two basal joints 

 red ; vertex black from back of head to clypeus ; upper 

 half of orbits rufous; a spot between and beneath anten- 

 nae, lower half of orbits and of face, base of mandibles, and 

 palpi, yellow ; clypeus produced, moderately emarginate; 

 thorax black ; edge of collar, scutellum, two dots behind 

 ridge of metathorax and below, and a spot on pleura at 

 base of coxae, yellow ; middle of pleura indistinctly ru- 

 fous ; abdomen and legs dark rufous ; anterior coxae at 

 base, posterior coxae, trochanters, femora, tips of tibiae 

 above, and tips of intermediate femora, black ; tarsi pale 

 reddish yellow ; wings smoky in middle ; stigma, costa, 

 and wing-scale piceous. 



