236 IOWA ACADEMY OF SCIENCES. 



over the entire state and is becoming a veritable nuisance, even 

 in the smaller towns of the prairie region. 



Periplaneta americana Linn. Specimens of this large south 

 ern form have been found at Carbonado, Grand Junction, Little 

 Rock and Ames, but in every case in buildings where bananas 

 were sold, and it is doubtful if they have gained a permanent 

 foothold. 



Fam. PHASMiD^E — "Walking Sticks. 



Diapheromera femorata Say. Common throughout the tim- 

 bered portion of the state. Either this or an allied species has 

 been observed very commonly on the prairies of the north- 

 western portion of the state, during August and September. 

 Fam. Gryllid.^ — Crickets. 



Tridactylus apicalis Say. This small species was found 

 rather commonly as nymphs, along the margin of a small 

 stream in August and September, and again the following 

 April. Adults were taken in July. 



Gryllotalpa bo7'eaUs Scudd. 



Gryllotalpa Columbia Scudd. This and the preceding species 

 are found only in the southern portion of the state. Are they 

 distinct? 



Gryllus abbreviatus Serv. The most abundant species in the 

 state occurring everywhere. Sometimes occasions considerable 

 loss in the grain raising sections by cutting the bands of the 

 shocked grain. 



Gryllus luctuosus Serv. Rare. 



Gryllus pennsylanicus Burm. A few specimens of a broad 

 headed cricket that has been referred here were taken from 

 the timber in July. 



Nemobius fasciatus DeGeer. Occurs with abbreviatus in the 

 fields. 



Nemobius carolinus Scudd. Common in the woods. 



Anaxij)hus pulicarius Sauss. A number of these small light 

 colored crickets were taken while sweeping in the woods in 

 July. 



Apithcs agitator Uhl. One specimen of this southern form 

 has been received from Lee county. 



(Ecanthus fasciatus Fitch. Abundant everywhere during the 

 latter part of the season. 



(Ecanthus aiigustipennis Fitch. Examples of this species 

 appear several weeks earlier than any of fasciatus, and may be 

 found rather commonly on the prairie. 



