no NORTH AMERICAN BLATTIDAE 



Coloration. — cf. (Normal.) General coloration ochraceous- 

 buff with disk of pronotum and tegmina slightly darker, tinged 

 with ochraceoLis-tawny. Head tawny, shading laterad to ochra- 

 ceous-buff at the antennal sockets and genae ; eyes blackish brown ; 

 ocelli pale ochraceous-biiff. Tegmina transparent. Wings hya- 

 line, faintly tinged with ochraceous-tawny, this slightly heavier 

 distad in the anterior field and decidedly heavier, as heavy as on 

 the tegmina, in the costal area. Abdomen ochraceous-buff , washed 

 with ochraceous-tawny distad. In specimens of maximum reces- 

 sive coloration, the ochraceous-tawny is everywhere more dilute, 

 the vertical cephalic marking, however, never disappearing. In 

 the intensive extreme this marking is tawny above, but mars brown 

 below the ventral margin of the eyes; the tegmina being deep 

 russet, with the exception of the marginal field, which is weak 

 ochraceous-tawny. 



9 . (Maximum recessive.) Head, pronotum, mesonotum and 

 metanotum ferruginous, the former slightly paler on the genae, 

 the latter narrowly margined with blackish brown caudad. Teg- 

 mina kaiser brown, with marginal field ferruginous. Dorsum of 

 abdomen blackish brown, with numerous segments narrowly bor- 

 dered proximo-laterad with ferruginous. Eyes blackish brown. 

 Minute ocellar dots cream color. Limbs ochraceous-tawny proxi- 

 mad, deepening to tawny at the tibiae. Ventral surface of abdo- 

 men kaiser brown, each segment broadly marked with blackish 

 chestnut laterad. From this condition to the maximum intensive 

 type of coloration every gradation and variation is found, the 

 majority of even the paler specimens having, however, the abdo- 

 men solidly blackish brown above and below. Rarely pale speci- 

 mens, having the pronotum ferruginous, have the tegmina, excepting 

 the marginal field, blackish brown, this color occasionally briefly 

 invading the pronotum latero-caudad. This particular condition 

 is strikingly handsome. (Maximum intensive.) General color 

 shining l)lackish brown, the trochanters and tarsal joints russet. 

 Minute ocellar dots whitish. Often specimens of intensive color- 

 ation have the tegmina, and occasionally the pronotum and limbs, 

 slightly paler, blackish chestnut brown, but a multitude of varia- 

 tions occur. One striking type is above entirely blackish brown, 

 except the marginal fields of the tegmina, which are tawny. 



