28 GEO. H. HORN, M. D. 



The scutellar stria is long and well marked, attached at its basal 

 end, but free at the other. The ocellate punctures of the eighth 

 stria form a series broadly interrupted at middle. The marginal line 

 of the prosternum is sometimes seen at the tip only, but specimens 

 are frequent in which it is entire. The third joint of the antennse 

 is cylindrical at base. 



The larger specimens have some resemblance to mslg^iis of the 

 true Amara series, and it is remarkable that the latter has a deep 

 punctiform depression of the male prosternum. 



In the male the middle tibia is very feebly arcuate, the posterior 

 straight. The last ventral segment has one setigerous puncture each 

 side, the female has two. 



No great vai'iation has been observed in this species, except in 

 size. As a general rule the northern specimens are the smaller, 

 while those from southern California or Arizona are much larger. 



Occurs from Oregon southward through California into Arizona, 

 extending into the Peninsula of California and the Guadaloupe 

 Islands. It also occurs in northern Mexico. 



Group remotestriata. 



Antennee entirely rufo-testaceous. Legs usually pale, or with the 

 femora piceous. Thorax with sharply defined rectangular hind an- 

 gles, the disc vaguely depressed at the sides, more broadly posteriorly. 

 Prosternum with a gi'ouj) of small |)unctures at middle in the male, 

 the tip with two setigerous punctures. 



This group is exactly equivalent to the fifth as defined by Zim- 

 mermann. It will be observed that the apex of the thorax is more 

 deeply emarginate than in either californica or gibba, so that the 

 angles of the thorax seem more prominent. The depression of the 

 sides is not strongly marked, but is relatively nearly as great as in 

 obesa. In the males of all the species there are two anal setre each 

 side as in the female, the pairs more closely ai)pr()ximated in the 

 male. 



The species are very closely related among themselves, but may 

 be approximately separated by the following table: 



Legs entirely rufo-testaceous ; males more or less shiiiiiio;, females opaque. 



I'oiiiotef^triata. 

 Femora piceous. tibire and tarsi pale, species small, sliiiiing iu both sexes. 



f*einoralis. 



