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FAMILY IX. — ARADID^. 



Mount Katahdin, Me., to Agricultural College, Miss., but only 

 about half a dozen specimens are recorded. The long, suddenly 

 enlarged second antennal, and red abdominal disk separate it 

 from inornatus, its nearest ally. 



Group V. — Aradus. 



Species of small size and dark color having the margins of 

 pronotum entire or granulated, often sinuate. Basal expansion 

 of corium usually narrow or obsolete. Twelve of our eastern 

 species belong to this group. 



KEY TO EASTERN' SPECIES OF GROUP V, ARADUS. 



a. Corium strongly dilated at base, width of elytra at that point usu- 

 ally greater than that of pronotum. 

 b. Third antennal segment pale; length less than 6 mm. 



amomcui 



Plate III. Structures of Aradus. 

 a, Ventrals V and VI and genitals of female: b, genitals of male, terminal por- 

 tion only ; C, antenna ; d, pronotum and sometimes the adjacent parts ; . . dorsal view 

 of hind part of abdomen, female; (/. /. genital lobes. (After Parshley). 



