126 IOWA ACADEMY OF SCIENCES. 



Empoa rosre Harr. Doubtless common but as in i^receding species availa- 

 ble descriptions are meager. 



Empoasca mali LeB. Common. 



Em2)oasca obtusa (— ?). Fairly common. 



Deltocephahis inmiicus Say. A most abundant and injurious species affect- 

 ing grasses. 



Deltocephahis debilis Uhl. Abundant and destructive in grass. 



Deltocephalus Sayi Fitch. Common but not abundant. 



Deltocephalus melsheimeri Fitch. 



Deltocephalus Harrisii Fitch. 



Deltocephahis retrorsus Uhl. (MS.) 



Deltocephalus virgulatulus JJhl. (MS.) 



Onathodes 2)unctatus Thunb. 



Conogonus qagates. 



Platymetopms acutus Say. This odd form is often to be found in consid- 

 erable numbers. 



Platymeiopius frontalis VanD. Rare. 



Grypotes tmicotor Fitch. Common. 



Athysamis curtisii Fitch. Taken in small numbers at Ames and Fairfax. 



Athysanus striola Fall. Not common. 



Athysamis obsolettis Kirsch. 



Cicadula exitiosa Uhl. Common. 



Cicadula 4-lineata Forbes. 



Cicadula 6-notata Fall. 



Phlepsius irroratus Say. A very common species here as well as through- 

 out most of the United States and Mexico. 



Phlepsiiis Julvidorsum Fitch. 



Phlepsius sjmtulattis Van D. Not common. 



PhlejJsius nebulostis Van D. One specimen quite certainly collected in 

 Iowa. 



Eutettixjticundus Uhl. Rare. Specimens from Ames and Des Moines. 



Paramesus sp. An interesting species undescribed. 



Thamnotettix clitellarius Say. Rather common. 



ThaniJiotettix seminudus Say. Common. 



Thavi7iotettix melanog aster Frov. Common. 



Thamnotettix kennicottii Uhl. 



Coelidia olitaria Say. Common. 



Cmlidia suhbifasciata Say. Quite common. 



Idioceriis maculipennis Fitch. 



Idiocerus alternata Fitch. 



Idiocerus unicolor Fitch. ? 



Idiocerus j^rovancherty a,xi.Y). (MS. ?) 



Agallia quadrijmnctata Prov. Common. 



Agallia sangtiinolenta Prov. Very common, especially in clover. 



Pediopsis insignis Van D. 



Pediopsis tristis Van D. 



Pediopsis viridis Fitch. 



