:t~i THE CANADIAN ENTOMOLOGIST. 



minntus, and both may be identical with Stal's Salacia pilosula, although 

 that author describes the third and fourth joints of the antennae as of 

 equal length. Cligenes has not yet been reported from north of Mexico. 

 Pygceus I would retain as a distinct genus with pilosulus and pallidas as 

 North American species. 



Genus Ischnodemus, Fieber. 

 Heretofore but little has been published on our North American 

 species of this genus, and until very recently but one species, /aliens, had 

 been recorded from our territory. Descriptions of four new species from 

 Florida and one from the Western States have been published by me 

 during the present year, together with a doubtful recognition of one of the 

 Biologia species, making a total of seven species now known from the 

 United States. The following key may assist in placing these species : 



Rostrum not or scarcely passing the base of the prosternum i. 



Rostrum reaching to or behind the middle of the mesosternum 3. 



1. Antenme ferruginous or pale at base j. prcecultus, Dist. 



Antennae black or somewhat piceous in immature examples 2. 



2. Third antennal joint scarcely shorter than the second and fourth ; discal 



areole of the corium with fuscous veins /. /aliens, Say. 



Third antennal joint distinctly shorter than the second and fourth ; 

 discal areole of the corium immaculate 2. rufipes, Van D. 



3. Osteolar orifice concolorous, blackish or very obscurely pale 4. 



Osteolar orifice large and conspicuously pale or rufo-testaceous. ... 5. 



4. Antennae stout, basal joint a little longer than thick ; colour black, legs 



and base of the antennae dark rufo castaneous ; hind margin of the 



pronotum narrowly testaceous 4. lobatus, Van D. 



Antennae slender, basal joint much longer than thick ; legs and base 

 of the antennae pale rufo-testaceous ; hind margin of the pronotum 

 broadly rufo-testaceous j. Slossoni, Van 1). 



5. Black; pronotum narrowed from its base ; size large. 6. eonicus, Van D. 

 Castaneous ; pronotum posteriorly oblong, abruptly narrowed anterior- 

 ly ; size medium, form slender 7. badius, Van D. 



1. Ischnodemus /aliens, Say. 



Say, Complete Writings, I, p. 331. 



This species is widely distributed in the United States, from New 

 York southward, but I did not take it in Florida, which is probably 

 beyond its southern range. Its best differential characters are given in 

 the above key, and more fully in my description of rufipes. 



