IOWA ACADEMY OF SCIENCES. 61 



been piled up by freshets. Occasional under stones and pieces 

 of wood in grassy places. March, April, May. 



E. occultus Gas. May 8th. Sifted from rotten oak stump in 

 high woodland. 



E. afflnis Cas. Found with E. occultus. 



E. ^ratus Cas. This or a very closely allied form has been 

 taken here rarely in April and May. 



E. salinator Lee. Sifted from debris on damp bottom lands. 

 May 15th-22d. 



PycnopJms rasus Lee. Not common here. It has been taken 

 under boards with the ant Oremastogaster lineolata Say. May 

 5th-31st. 



Gonnophron longipenne Cas. March and April, under shelter 

 in open grassy spots. 



G. formale Cas. In ants' nests. No date preserved. 



G. ludificans C&s. April to June in grassy places, under 

 stones or pieces of wood. 



G. nigripenne Cas. April and May. 



G. fossiger Lee. April 10th. 



G. femorale Cas. April and May. Damp spots near small 

 creeks. 



G. clavicorne Cas. April. Seen chiefly under small stones 

 in grassy places. 



G. pallidum Cas. May 29th-31st. Prom nest of the ant 

 Lasius apMdicola. 



G. integrum Cas. May lst-29th. Habits of E. clavicorne. 



G. decorum Cas. April 15 th. This and the three following 

 species seem to prefer grassy open ground. 



G. testaceipes Cas. April. 



G. castaneum Cas. April. 



G. triviale Cas. March and April. 



G. trifidum Cas. No date. 



G. fulvum Ijec. May lst-9th. 



G. capillosulum I^ec. March, May and June. 



G. illustre Cas. No date. 



G. lacunosum Cas. March and April. 



G. pumilum Cas. April 14th. This and the preceding 

 species have the habits of decorum. 



Smicrophus leviceps Cas. No date. 



Scydmoinus conjux Cas. No date. 



Ascydmus tener Cas. May 9 th. Sifted from an old rotten 

 oak stump in high woodland. 



