IOWA ACADEMY OF SCIENCES. 
39 
only such fragmentary collecting, if any, can be done for many 
years, still we seem warranted in concluding 
First . — That the region west of the divide supports numer- 
ous species which belong to the plains fauna of Nebraska and 
the Dakotas, and reach their eastern limit in the corner of 
Iowa. 
Second . — That southern forms extend farther northward in 
the Missouri valley than in central Iowa, and 
Third . — That the extreme northern portion includes some of 
the species of the boreal zone not observed elsewhere in Iowa. 
SIOUX CITY. 
Hecalus lineatus, Paramesus twining-i, P. vibellinus, Deltocephalus pec- 
tinatus, D. compactus, D. cruciatus, D. inflatus, D. nigrifrons, D. melschei- 
meri, Lonatura catalina, Driotura robusta, D. gammaroidea, Eutettix strobi, 
Chlorotettix spatulata, Phlepsius truncatus, P. altus, Gnatodus abdominalis, 
Macropsis apicalis, Agallia sanguinolenta, A. uhleri, A. cinerea. 
Chariesterus antennator, Mecidia longula, Perillus circumcinctus, 
Palacocoris suavis, Reut? 
LITTLE ROCK. 
Dorycephalus vanduzei, Paramesus vitellinus, Neocoelidia tumidifrons, 
Deltocephalus pectinatus, D. albidus, D. reflexus, D. signatifrons, D. cruci- 
atus, D. oculatus, D. melscheimeri, D. inflatus, D. configuratus, D. argen- 
teola, D. collinus, D. inimicus, Lonatura catalina, L. megalopa, Driotura 
robusta, D. gammaroidea, Thamnotettix smithi, T. ciliata, Chlorotettix 
spatulata, C. unicolor, Phlepsius lobatus, Athysanus striatulus, A. magnus, 
A. comma, A. colon, A. punctatus, Cicadula 6-notata, Parabolocratis viridis, 
Idiocerus duzei, Macropsis apicalis, Pediopsis viridis, Agallia sanguino- 
lenta, A. cinerea, A. novella, Philsenus bilineatus. 
Systratiotus americana, Mimoceps gracilis, Largidea opaca(var.) Phyto- 
coris sp. Harmostes refiexulus. 
CHEROKEE. 
Hecalus lineatus, Deltocephalus pectinatus, D. argenteola, D. inimicus, 
D. oculatus, D. melscheimeri, Chlorotettix spatulata, C. unicolor, Athysanus 
striatulus, A. comma, A. colon, Phlepsius altus, Parabolocratis viridis. 
ROCK RAPIDS. 
Deltocephalus nigrifrons, D. sayi, D. inimicus, Athysanus comma, Cica- 
dula 6 notata, C. variata. 
SIOUX FALLS, S. D. 
Paramesus vitellinus, Neocoelidia tumidifrons, Deltocephalus inflatus, 
Phlepsius decorus. 
YANKTON, S. D. 
Neocoelidia tumidifrons, Deltocephalus pectinatus, D. nigrifrons, Platy- 
metopius sp., Chlorotettix spatulata, C. unicolor, Athysanus striatulus, A. 
comma, Cicadula 6-notata, Gnathodus abdominalis. 
