38 
IOWA ACADEMY OP SCIENCES. 
Mecidia longula Stal. A single specimen of this southern 
species was taken at Sioux City from the crest of one of the 
hills. I know of no previous record for this species above the 
lower austral zone, but the Missouri valley doubtless furnishes 
conditions more nearly like the south and provides for the 
northern extension of such species. With this as an indica- 
tion, we should hardly be surprised if Murgantia histronica were 
to appear in similar localities. 
Ghariesterus antennator Fab. , another southern species 
belonging properly to the lower austral zone, was taken at 
same time and place as Mecidia longula. No other record of its 
occurrence in Iowa. 
Harmostes rejtexulus Say. Little Rock (Ball). 
Pamera vicina Dali. (?) A species of Pamera which is 
tentatively referred here occurred in considerable abundance 
at Little Rock. 
Palococoris suavis Rent. (?) Sioux City. Brachypterous 
form. Described from Texas. 
Systratiotus americanus Reut. Little Rock (Ball). 
Largidea opaca Uhl. This species is represented by a variety. 
Mimoceps gracilis Uhl. This handsome species was taken at 
Little Rock, July 2d. 
Of the plains fauna, and belonging to the upper austral, we 
have such species as Homsemus bijujus, Thyanta custator, 
Nysius californicus, Phelpsius altus, decorus, Driatura robusta, 
gammaroidea, Dorycephalus vanduzei, Deltocephalus collinus, 
albidus, rellexus, pectinatus, signatifrons, cruciatus, inflatus, 
Athsanus punctatus, Lonatura catalina, Agallia uhleri, Gypona 
cinerea. 
Of boreal forms we have Peribalus piceus, Lioderma bel- 
fragei; of lower austral forms, Mecidia longula, Chariesterus 
antennator. 
It does not follow that species not taken in the region do 
not occur there, as collecting through the season and in 
several seasons would be necessary to reach this point, but the 
group has been collected so thoroughly at Ames that we may 
be pretty sure that species found in the northwestern part of 
the state, and not at Ames, are not distributed over the central 
and eastern part of the state, and represent, therefore, a dif- 
ferent fauna. 
While such a survey must necessarily be considered prelim- 
inary, and the excuse for its presentation the probability that 
