168 Proceedings of the Biological Society of Washington. 



growing on the stem of Ulmus sp., at Sapporo, Hokkaido, Japan. 

 These are as follows: EROTYLIDAE, Cyrtotriplax nipponen- 

 sis Lewis, Triplax ainoicus Lewis, Eudaemonium tuherculifrons 

 Lewis; MELANDRYIDAE, Penthe japonica Mars; TENEBRI- 

 ONIDAE, Epiphalevia atriceps Lewis, Plesiophthalmus nigro- 

 cyaneus Motsch., Helops strigipennis Mars., Stenis insomnis 

 Lewis, Lyprops sp., NITIDULIDAE, Strongylus ater Hbst. ; 

 HISTERIDAE, Hister concolor Lewis, Hister cadaverinus Hoff . ; 

 SCAPHIDIIDAE, Scaphisoma sp.; STAPHYLINIDAE, Phil- 

 onthus cyanipennis F., Oxyporus nigra Sharp, BoUtobius simplex 

 Sharp, Conurus sp. ; MYCETOPHAGIDAE, Mycetophaga heller- 

 iana Reitt. Evidently Pleurotus is a universal favorite with the 

 Coleoptera, as in the United States we have found more species 

 associated with Pleurotus ostreatus than any other member of 

 the Agaricaceae. 



Order Coleoptera. 

 Family Silphidae. 



Leiodes basalis Leconte. On slime mould, Monmouth Junction, N. J., 

 June 2. 



Family Staphylinidae. 



Omalium rivulare (Payk.). From Pleurotus ostreatus, Cincinnati, Ohio. 



April 23. 

 Philonthus cyanipennis F. Feeding on Hygrophorus sp., Monmouth Jc, 



N. J., August 6. 

 Philonthus blandus (Grav.). Feeding on Russula crustosa, Monmouth Jc, 



N. J., August 6. 

 Ontholestes cingulatus (Grav.). On Russula crustosa, Monmouth Jc, 



N. J., August 6. Predaceous. 

 Tachinus fimbriatus Grav. On Collybia platyphylla, Monmouth Jc, N. J., 



June 11. 



Family Nitidulidae. 



Stelidota geminata (Say). Feeding on Russula crustosa, Monmouth Jc, 



N. J., August 6. 

 Stelidota octomaculata (Say). On Boletus sp., Monmouth Jc, N. J., 



July 21. 



Family Erotylidae. 



Megalodacne fasciata Fab. Larvae feeding in Polpyorus lucidus, Union, 

 N. J., Sept. 16. Presence is detected by large amount of frass, excrement, 

 etc., thrown out on top of fungus. 



Family Tenebrionidae. 

 Bolitotherus cornutus (Panz.). Feeding on lower surface of Polyporus 

 betulinus, Springfield, Mass. (G. W. Dimmock.) Egg capsules noted 

 on lower surface of Polyporus lucidus. Union, N. J., Sept. 16. 



