8 NORTH AMERICAN BLATTIDAE 



E. Pronotum distinctively and strikingly marked. Ventro-cephalic mar- 

 gin of cephalic femora with two heavy, elongate, distal spines. (Size 

 small.) 

 F. Tegmina considerably reduced, not reaching apex of abdomen, but 

 not truncate. Pronotum shining blackish brown, margined laterad 

 and cephalad with buffy, which band, at the latero-caudal angles, 

 crosses the pronotum before the caudal margin, in this transverse por- 

 tion being broader Euthlastoblatta abortiva (Caudell) 



FF. Tegmina considerably reduced, truncate. General coloration 

 buffy, beautifully marbled and marked with blackish brown. Prono- 

 tum buffy, disk bordered rather narrowly with blackish brown, and 

 with an anchor-shaped marking of this color, the arms of which are 



cephalad Aglaopteryx gemma new species 



EE. Pronotum not distinctively and strikingly marked. Ventro-cephalic 



margin of cephalic femora with three heavy, elongate, distal spines. 



(Size medium small.) 



F. Tegmina very slightly reduced, extending beyond apex of abdomen. 



General coloration warm buff. Head warm buff with inter-ocular- 



ocellar area prout's brown, broken mesad by twin spots of warm buff. 



Latiblattella rehni new species 

 FF. Tegmina reduced, not reaching apex of abdomen. General colora- 

 tion warm buff with an ochraceous tinge. Head warm buff, vertex strik- 

 ingly pale buff, face maculate with prout's brown. 



Latiblattella lucifrons new species 

 DD. Four proximal tarsal joints each bearing a pulvillus. (Ventro-cephalic 

 margin of cephalic femora with three heavy, elongate, distal spines. Pro- 

 notum with caudal margin truncate caudad.) 

 E. General coloration solid, shining blackish brown, with limbs ochraceous 

 orange. (Tegmina truncate distad, subquadrate pads with sutural mar- 

 gins weakly overlapping. Size medium small.) 



Ischnoptera deropeltiformis (Brunncr) 

 EE. General coloration never solid, shining blackish brown, with limbs 



ochraceous orange Parcoblattai^ 



CC. Ventro-cephalic margin of cephalic femora armed with a row of spines 

 which decrease gradually in size and length distad (type A). (Four proximal 

 tarsal joints each bearing a puhillus.) 

 D. Supra-anal plate not bilobate. 

 E. Tegmina not truncate. 



F. Tegmina with strongly oljlicpie discoidal sectors. (Size medium 

 small. Tegmina reduced, extending to apex of abdomen. N'entro- 

 cephalic margin of cephalic femora with two heavy, elongate, distal 

 spines. General coloration ochraccous-buff. Pronotum with two 



^* A key to the females of the twelve species of this genus is given on jKige 75. 



