144 NORTH AMERICAN BLATTIDAE 



Biometric and color variations in the present insect are equally 

 striking, both due in large part to individual variation. The 

 extremes of the different types, particularly in the female sex, are 

 so very different in general appearance that little surprise should 

 be felt at the considerable synonymy. Indeed, without large 

 series for illustration, the difficulty would be to convince even 

 the experienced worker that such decidedly different appearing 

 insects represent one and the same species. 



Coloration. — cf. (Normal.) (Philadelphia, Pennsylvania.) 

 Head with occiput chestnut; below this, to margin of clypeus, 

 blackish chestnut brown; genae and remaining portions of clypeus 

 cinnamon-buff. Ocelli cream color. Underparts and abdomen 

 heavily suffused with blackish chestnut brown, the latter mesad, 

 and on the proximal segments briefly proximo-laterad, cinnamon- 

 buff. Limbs cinnamon-buff, the ventral femoral and dorsal tibial 

 margins and spines washed with chestnut brown. Pronotum with 

 disk and caudal margin blackish chestnut brown, except mesad, 

 where a narrow, longitudinal, suffused line of hazel occurs; re- 

 maining narrow cephalic and broader lateral portions of pronotum 

 warm buff, the lateral portions in large part transparent. Teg- 

 mina transparent, heavily washed with cinnamon brown, with 

 marginal field and proximal portions of scapular field very feebly 

 washed with cinnamon brown, proximal portion of humeral vein 

 blackish brown. Dorsal surface of abdomen ochraceous-tawny, 

 heavily suff'used laterad and distad (including supra-anal plate 

 and cerci) with blackish chestnut brown. In the maximum reces- 

 sive condition the browns are all more dilute and occasionally the 

 disk of the pronotum is alone darkened. -^° (Maximum intensive.) 

 (Waco, Texas.) Head, underparts and limbs cinnamon brown, 

 the limbs more solidly of a darker shade. Abdomen blackish 

 chestnut brown. Pronotum dark chestnut l)rown from narrow 

 area on cephalic margin expanding through disk to and including 

 entire caudal margin, lateral margins sharply defined in warm 

 buff. Tegmina translucent, deep cinnamon brown, with marginal 

 field sharply defined in light buff'. Dorsal surface of abdomen 



^■'" In this copflition resembling more closely males of divisa in general coloration. 



