ing low, swampy areas and kettleholes. Farther to the south of 

 Elm Crest the Beck canal has been constructed through a part 

 of the above-mentioned swamp along a wooded peninsula. Be- 

 tween the canal and the woods rank growths of weeds, hazel, 

 wild grape and willow yielded such species as Euschistus tris- 

 tigmus, Thyreocoris lateralis, Thyreocoris nitiduloides, Brochy- 

 mena quadripushdata, etc. To the south of the canal are open 

 fields of native and cultivated grasses where Hommmiis hijugis 

 was found in some numbers. 



Gull Point, about three miles southeast of the Laboratory, 

 presents a fine, sandy beach extending a hundred yards or more 

 out into the lake. The sandy soil here supports such plants as 

 Wormwood, Rush Grass, Beard Tongue and Sedge. In the sand 

 among the roots of these plants were found the only specimens 

 of JEth'ics ohliquus taken in the region. 



Hayward's Bay offered the best pentatomid collecting ground 

 in the vicinity of the Laboratory. Rere, along the east side of 

 West Okoboji lake is another low, sandy beach with small eleva^ 

 tions and swales just away from the margin of the lake. A few 

 yards directly east from the head of the bay is a small, swampy 

 area grown up in rushes and water plants which furnished nest- 

 ing places for many Red-wing Blackbirds. Excellent collecting 

 was enjoyed along the edges of this swamp on the cultivated and 

 native grasses. Such places yielded Podops parvtdus, Thyreo- 

 coris puUcarius and Thyreocoris ater. On both north and south 

 sides of the swamp are low hills, the larger of which presents a 

 southw^est exposure and the sandy soil supports an abundance of 

 blue grass and red clover with a few native plants. Here, 

 Hommmus hijugis was very common with Eiischistus variolanus, 

 Coenus deliiis, Neottiglossa imdata, Cosmopepla himactdata and 

 others present in some numbers. Nowhere else in the Okoboji 

 region were so many species of pentatomids found in such great 

 abundance as in this small area of perhaps three acres. 



Of the outlying poiats where good collecting w^as had in north- 

 westena Iowa but three will be mentioned. 



At Estherville, about sixteen miles east of the Laboratoiy in 

 Emmet county, collecting was done on the upland prairie which 

 furnishes a portion of the watershed between the Missouri and 

 Mississippi drainage systems. 



Sibley, about twenty -five miles west of Okoboji lakes in Osce- 



41 



