304 IOWA ACADEMY OF SCIENCE 



Thyreoeoris nitididoides Wolff. Generally distributed over 

 the state; apparently nowhere common. 



Thyreoeoris pulicaria Germar. This most common species of 

 the family has been taken in almost every locality in which 

 collecting' has been done. 



Thyreoeoris vnicolor P. B. First recorded from the state by 

 the writer (Ent. News, XXVI, 1915, 354), and among the mem- 

 bers of this family it ranks next in abundance to T. pulicaria. 

 Specimens are at hand from Iowa City, Des Moines, Centerville, 

 Hampton, Glenwood, Storm Lake, Fort Madison and several 

 other intermediate points. 



Subfamily Cydxixae. 



('yd nus obliquus Uhler. This species was first found in the 

 state on May 22, 1915. It was discovered about the roots of 

 Drop-seed Grass. (Sporobohis cryptandrus (Torr.) Gray) on 

 a sand area two miles north of Iowa City. This sand area 

 is perhaps two acres in extent, is not cultivated and supports 

 a vegetation characteristic of arid conditions. On the above- 

 mentioned date five live specimens 'of this species were found. 

 Nine days later another visit was made to the sand area and in 

 a little over three hours twenty-seven specimens were secured. 

 On this second visit also a pair of the bugs was found in copula. 

 These Cydnids have not been found elsewhere in the state. 



Geotomus parvidus Signoret. Two specimens of this species, 

 each bearing an Ames locality label were recently discovered by 

 the writer in the collection of the Iowa State College. This may 

 possibly be the species to which Professor Osborn referred in 

 the Proceedings of the Iowa Academy of Science, Volume V, 

 page 232, 1897, where he lists "Geotomus sp." from Iowa. No 

 other Iowa records of this western form are at hand. 



fleJiirus cinctus P. B. This species, first recorded from the state 

 by the writer, (Ent. News, XXVI, 1915, 354), has been found 

 in but two localities, Iowa City and Grinnell. At Iowa City it 

 was taken from under dried grass along the edges of boards 

 lying in a pasture in late .March. March 25, 1916, it was taken 

 from under leaves and some specimens were buried almost an 

 inch below the surface of the earth beneath the leaves where 

 they had been hibernating. The single Grinnell specimen was 

 taken in July on wild raspberry. 



