THE CANADIAN ENTOMOLOGIST. 107 



Hytnenorus riifipes Lee. — The larvae of this beetle were found abund- 

 antly in the nests of Formica fusca by Messrs. Pergande and Schwarz 

 near VVashington, D. C, and the beetles bred therefrom. — Am. Nat , 

 XVI., 748, and XVII, 1176. 



H. obscurus Say. — The larvae of this beetle were likewise found at the 

 same place in the nests of a large yellow ant, and, from the great care 

 bestowed on them by the ants, it was inferred they were not there by 

 accident.—//^., XVI., 748. 



Mr. F. W. Maeklin published in 1846 his Coleoptera Myrmecophila 

 Fennica, enumerating 136 species. He included such as were known 

 to live with ants habitually ; such as were found with them occasionally, 

 but usually elsewhere, and even such as occurred in the vicinity of their 

 nests, if of unknown habits. But the scope of the present catalogue is 

 more limited, as stated in the introduction, and would exclude a large 

 number of those on his list, and among them probably all of the following 

 European-American species: — 



Bemhidiiun 4-maculatiim Linn. — Dr. Sahlberg took at Ylsene a single 

 individual with F. rufa. This species requires no further notice. 



Tachypoi'iis brunneus Fab — ^Occurred once at Urpala in the society 

 of F. fuliguiosa. This species is exceedingly abundant here in early 

 spring under stones and chips ; sometimes an ant's nest is found under the 

 same stone with the beetle, but I never discovered any connection 

 between them, except the stone. 



T. scitulus Er. — -Taken not rarely in the nests of F. rufa. I only 

 know this species at secondhand, having obtained it from Mr. Dury, of 

 Cincinnati. Its habits in this country have not been noted. 



Tachiniis pallipes Grav. — Occurred once at Urpala among F. fuli- 

 ginosa. Pallipes is very common here, and is simply a scavenger beetle. 

 Conosoma pubescens Payk.— Found occasionally in the nests of i^ rufa. 

 This species is abundant here under the bark about the base of dead trees 

 and stumps ; as ants also frequently make their nests in the same place, 

 their being often found together is to be expected, but this does not make 

 the species a myrmophile. 



Ptejiidiiim evajiescens Marsh. — This species I include in my list doubt- 

 fully, 



Meligethes ceneus Fab. (Brassicce Scop.). — Found rarely at Kavan- 

 tholm in the nests of F. rufa by Mannerheim. In our country this species 



