120 IOWA ACADEMY OF SCIENCES. 



Oryllotalpa borealis. 



Oryllotalpa longipennis Scntld. This and the preceding species of Mole 

 Cricket are evidently common at times, but from their habits seldom 

 observed. The former has been sent us as injuring potatoes. 



CATALOGUE UF THE HEMIPTERA OF IOWA. 



HERBERT OSBORN, AMES, IOWA. 



A first notice of the Hemiptera was presented to the Academy in Decem- 

 ber, 1887, and a second in 1889. The third installment was presented 

 September, 1890, and comprised sixty-seven species. The previous lists, not 

 having been published, it will make the catalogue of much greater value to 

 combine them here. This group of insects is an exceedingly important one, 

 containing many very injurious species. While many of the especially 

 destructive forms have had extended notice, no list of the species occurring 

 in the State has hitherto appeared. Even now it is impossible to present 

 anything like a full list since many species have been collected that are yet 

 undetermined, and some of them ax-e certainly undescribed. Moreover, from 

 the numerous species constantly added to collections and the species known 

 to occur in adjacent territory we may be sure that many species still await 

 the collector. It is believed, however, that the publication of the list at the 

 present time will greatly assist in increasing our knowledge of the group 

 and enable us more rapidly to complete a catalogue that shall be fairly com- 

 plete. It has been considered best to include only those species actually 

 seen or recorded by some competent authority. Many species could be 

 included as probably occurring here, but to include them would make the 

 list of small value as indicating geographical distribution. 



Sub Order Heteroptera. 

 family scutellierid^. 



Eomcermis proteus Lhl. Sometimes rather common, but apparently 

 somewhat local in distribution. 

 Eurygaster alternatus Say. Not common. 



FAMILY CORIMEL.<ENID^. 



Corimelcena nitiduloides Wolff. 



Corimelcetia lateralis Fab. Sometimes fairly common. 



Corimelcena piUicaria Germ. Negro Flea Bug. Abundant. Sometimes 

 destructive to plants and often troublesome on raspberries on account of 

 its offensive odor. 



