14 



NORTH AMERICAN BLATTIDAE 



of abdomen. Ventro-cephalic margin of cephalic femora with three 

 heavy, elongate, distal spines. General coloration russet to brown- 

 ish black; pronotum cinnamon rufous, broadly margined with cream 



color.) Pseudomops septentrionalis new species 



EE. Ulnar vein of wings with proximal incomplete rami. (Size medium 

 small. General coloration ochraceous tawny. Tegmina fully developed, 

 extending beyond apex of abdomen ; discoidal sectors longitudinal. Dis- 

 coidal vein of tegmina and wings forked. Pronotum with caudal margin 

 weakly obtuse-angulate produced, with apex broadly rounded. Sixth dor- 

 sal abdominal segment specialized. Dextral style small, heavy, cylindrical, 

 with apex flattened and margin produced sinistrad ; sinistral style more 

 slender, curved, over twice as long as dextral.). .Symploce lita Hebard 

 DD. Structure heavily chitinous. Femoral spines very heavy. Styles 

 slender, elongate, straight, symmetrical processes of equal length, set in 

 sockets on margin of subgenital plate. (Concealed genitalia complex.) 

 E. Arolia present. Size large. 

 F. Tegmina much reduced. 



G. Tegmina represented by subquadrate pads, with sutural margins 

 weakly overlapping. General coloration immaculate dark claret 

 brown. Pronotum rarely showing traces of lateral yellow bands. 



Eurycotis floridana (Walker) 



GG. Tegmina represented by small, rounded trigonal, lateral pads. 



General coloration blackish brown, involuteh' lectured with buffy. 



Neostylopyga rhombifolia (Stoll) 



FF. Tegmina and wings fully developed, extending beyond apex of 



abdomen. 



G. Dorsal surface of abdomen unspecialized. Supra-anal plate sub- 



chitinous, extending as a hyaline mantle for half its length beyond 



subgenital plate, the distal portion divided. Cerci very elongate 



and slender distad. (General coloration reddish brown. Pronotum 



antimony yellow, with two very large, suffused blotches of chestnut. 



Tegmina unicolorous.) Periplaneta americana (Linnaeus) 



GG. Dorsal surface of abdomen with median segment specialized 

 mesad. Supra-anal plate entirely chitinous, roughly trapezoidal 

 in form. Cerci not as elongate, not as slender distad. 

 H. Ventral surface of subgenital plate unspecialized. Coloration 

 not solid. General coloration reddish brown. 



I. Tegmina unicolorous. Pronotum antimony yellow, with two 

 very large, suffused blotches of chestnut. 



Periplaneta brunnea Burmeistcr 



II. Tegmina deep bay, with marginal field strikingly ochraceous- 

 buff. Pronotum ochraceous-buff with an orange tinge, with 

 two large, shar])!>- delined blotches of black. 



Periplaneta australasiae (Fabricius) 



