130 NORTH AMERICAN BLATTIDAE 



brown, as is the entire ventral surface of the insect, including the 

 lateral portions of the coxae. Limbs ochraceous-tawny. Pro- 

 notum with disk zinc orange mesad, shading to tawny cephalad 

 and to chestnut brown laterad and caudad, cephaHc and lateral 

 margins light ochraceous-buff. Tegmina and wings slightly darker 

 than in recessive condition. (Maximum intensive.) (2 cf , Nat- 

 chez, Mississippi.) (PI. V, Fig. 6.) Head with genae and ocelli 

 light ochraceous-buff, remaining portions chestnut brown, as is 

 the ventral surface of the insect, becoming blackish distad on the 

 abdomen. Limbs cinnamon brown. Pronotum with disk solid, 

 deep chestnut brown; margins narrowly cephalad, more broadly 

 laterad, light ochraceous-buff. Tegmina translucent cinnamon 

 brown. Wings hyaline, tinged with cinnamon brown, heavily 

 suffused with this color in area of costal veins and, to a less 

 degree, in distal portion of anterior field. Abdomen with dorsal 

 surface chestnut brown, becoming blackish distad; cerci blackish 

 brown. 



9 . (Recessive.) (Normal in eastern material, rare west of 

 ^Appalachian Mountains.) Head with occiput kaiser brown, deep- 

 ening below to carob brown, genae ochraceous-tawny, ocellar spots 

 cream color. Limbs ochraceous-buff, strongly tinged with tawny 

 from femora distad. Ventral surface of abdomen blackish brown, 

 shading to carob brown mesad. Pronotum kaiser brown, some- 

 times, to different degrees, shading to ochraceous-buff laterad, 

 particularly latero-caudad. Tegmina translucent kaiser brown, 

 with marginal field ochraceous-buff. Dorsal surface of abdomen 

 blackish brown, proximad the segments, in increasing degree, are 

 deep hays russet in broad proximo-mesal portion. In the maxi- 

 mum intensive condition the insect is entirely shining blackish 

 brown, except the marginal fields of the tegmina which are trans- 

 lucent ochraceous-buff, suffused with carob brown. Even the 

 ocellar spots are blackish brown and scarcely discernible. In speci- 

 mens of decided intensive coloration the margins of the pronotum 

 laterad arc not unfrecjuently ochraceous-buff, the extent of this 

 coloring being individually variai)le. 



Immature individuals of lata and fulvescens might easily be con- 

 fused in the earlier stages, in the i)resent species the head is nor- 

 mally decidedly darkened. In lata, half grown specimens are 



