IOWA ACADEMY OF SCIENCES. 117 



lu the seventh bieunial report of the Iowa Agricultural College (1877), 

 Prof. C. E. Bessey published a " Preliminary List of the Orthopetera of 

 Iowa," but since tb.at publication a number of otlier species have been col- 

 lected and some of the names included there were from incorrectly deter- 

 miued specimens, so that a I'evision is desiraljle. 



Almost all of the species noted here are represented by specimens in the 

 collection of the Iowa Agricultural College at Ames, but a few have been 

 included on the authority of Prof. Lawrence Bruner, to whom also, I am 

 indebted for deterjninations of a number of species. 



Family ForfiCUlid^ (Order Dermapteua of some authors). 



While differing in many respects from the true Orthoptera the Earwigs 

 have been quite generally associated with them, and it will be in place to 

 mention that we have one rather common species here, coming occasionally 

 to light in summer time. 



Labia minor is the species referred to, but the species suspected of occur- 

 ring in the State by Prof. Bessey, has not as yet been observed in the State. 



Family Blattid^ (The Cock-Roaches). 



Peri2)laneta orientalis L., Oriental Cock-Roach, apparently confined to 

 larger cities. 1 have never seen it in houses in thinly settled localities. The 

 insect mentioned under this name in Prof. Bessey's list must have been the 

 following, which is very common: 



Platamodes pennsylvanica. Very common indoors and out. 



Ischnoptera horcalis. Common in woods, especially under loose bark of 

 fallen trees or stumps, 



Ectobia germanica. I have seen this very ijlentiful in depots in Des 

 Moines, but never in houses away from the city. 



Family Phasmid^. 



Diapheromera femorata, Walking Stick, common, but never noticed in 

 numbers sufficient to seriously defoliate trees. It is one of the most gro- 

 tesque of our insects, and with its long slender legs and wingless body 

 always excites the curiosity of observers. 



Family Acridid^. 



Tettix granulata Kii'by. 



Tcttix ornata Say. A quite common species, and with others of the genus 

 to be found in numbers in fall and early spring, on smooth patches of earth 

 on hillsides or in roads. 



Tettix femoi atus Scudder. Not so common as some of the species. 



Tettix cucullata Burm. A plentiful species. 



Acridium americanum Drury. Rare at Ames; has been received from Lee 

 county, and is probably more common in the southern part of the State. 



Acridium cdutaceum Harr. Rather common. 



Acridium emarginatum Scudd. Rather abundant at times, and, doubt- 

 less, capable of doiug considerable damage. 



Pezotcttix scuderii Uhl. Rare at Ames, or at least, but seldom observed. 



Pezotcttix occidentalis Br. This, and the three species following, included 

 on the authority of Professor Bruner. 



Pezotcttix gracilis. 



Pezotcttix ulbus Dodge. 



Pezotcttix ncbrasccnsis Thos. 



