Il6 NORTH AMERICAN BLATTIDAE 



chitinous process recurved at decidedly less than a right-angle, moderately elongate, 

 with recurved portion very slender and little wider than at point of recun-ature. 

 Dextrad and immediately adjacent is situated a straight, very slender process, with 

 chitinous apex aciculate and curved weakly dextrad. Subgenital plate with sur- 

 face feebly convex, lateral margins more convex and convergent than in jihleriana, 

 to weak concavities before styles, but with general character and also sinistral style 

 as in that species. Dextral style situated in a socket above the caudal margin of 

 the plate, this socket placed on the caudal surface of a sharply rounded, rather 

 elongate, knob-like projection of the dorsal surface on the plate. i^» 



Characters of Female. — (Spring Creek, Georgia.) Very similar to uhleriana in size, 

 form and shape of head. Interocular width very slightly greater than that between 

 antennal sockets. Very small ocellar spots present. Pronotum moderately con- 

 vex, without discal sulci, ample, with greatest width near caudal margin, which is 

 truncate, very weakly convex. Tegmina subquadrate, with sutural margins feebly 

 overlapping, truncation at apex of anal vein (normally) showing a weak concavity 

 in the discoidal field, weakly oblique so that the (normally) rather sharply rounded 

 angle at the costal margin is slightly the more produced. i^" Wings much as in 

 virginica. Sixth dorsal abdominal segment with distal margin (normally) concave 

 laterad, convex in broad mesal portion. i^i Supra-anal plate, cerci and subgenital 

 plate much as in uhleriana. 



Measurements {in millimeters) 



-, Length of Length of Width of Length of Width of 



^ body pronotum pronotum tegmen'^ tegmen 



Arlington, Virginia. .. . 13.7 3.3 4.7 16.3 4.8 



Raleigh, North Caro- 

 lina (3) 16-15-7 3-6-3-7 4-8-4-9 16-17. 5 5-5.3 



Southern Pines, North 



Carolina (9) 16-16. 5 3-3-3-9 4-3-5 15. 2-18. 2 4.9-5.6 



Sanford, Florida (6) 12. 5-13. 5 3-3-3-6 4-7-4-8 I4-I5-3 4-7-4-8 



Fort Lauderdale, Flor- 

 ida 15-7 4 5-2 16.7 5.7 



Cocoanut Grove, Flor- 

 ida 14.5 3-7 4-5 14-3 4-6 



Gulfport, Mississippi. . (2) 14-14. 5 3.6-3.6 4.7-4.8 14. 7-15 4-7-4-6 



San Antonio, Texas. .. . 15 3.8 5.2 16.4 5 



''■' The variation found in this projection is discussed above. Both supra-anal and 

 subgenital plates also show frequent minor irregularities of outline. 



IS" Variation occurs to a type in which the caudal margin of the tegmen is broadly and 

 evenly rounded, with angle at costal margin, in consequence, broadly rounded. This 

 condition is rarely found in eastern material, but is the normal type in the Texan females 

 (PI. IV, fig. 16), a few of these, however, showing a feeble emargination in the discoidal 

 field. 



"*' This production varies frequently in degree and is occasionally rounded sub-trigonal. 



1*2 The length of the exposed portion of the tegmen is given for females. 



