232 NORTH AMERICAN BLATTIDAE 



The interocular width sometimes varies decidedly; normally slightly less than 

 that between the ocelli, we have a few specimens in which these dimensions are 

 subequal, while rarely the interocular width is decidedly less, in one example before 

 us equalling but one-quarter that between the ocelli. Concealed genital hook 

 small and slender, curved gently inward; apex enlarged and blunt, bearing a sharp 

 basal tooth on the inner side directed proximad, thus resembling the barb of a fish 

 hook. Dextro-dorsal concealed genital plate, a large, smooth, ovate, chitinous 

 lobe; dextro-ventral concealed genital plate a flattened, chitinous plate, which 

 shows neither shagreenous surface (as in bolliana and rehni) nor sharp projection 

 (as in apacha). 



The adult female not having been previously recognized, we 

 here describe that sex, 



9 ; Round Mountain, Blanco County, Texas. (F. G. Schaupp.) 

 [Academy of Natural Sciences of Philadelphia.] 



Description of Female.— Wery unlike male, apterous, size much larger, form broad 

 ovate. Dorsal surface rugulose, covered with very short, but stout, minute reddish 

 hairs, these longest along the margins of the body, particularly cephalad. Pro- 

 notum moderately broad, cephalic margin evenly arcuate at an angle of less than 

 90°, caudal margin almost transverse, very weakly produced mesad, with sides 

 showing a slight concavity. Supra-anal plate transverse, weakly trapeziform; 

 caudal margin weakly convex laterad, with mesal fifth subtruncate, showing an 

 indication of mesal emargination. Subgenital plate very large, roundly produced 

 mesad. 



Measurements {i)i millimeters) 



-71 Length of Length of Width of Length of Width of 



body pronotiim pronotum tegmen tegmen 



Round Mountain, Texas(3) 15. 4-1 7. 5 5.1-5.3 7-7-8 20.3-21 7,4-7.8 



Carrizo Springs, Texas. (9)5" 13. 5-18 4.2-5.7 6-8.7 16.6-22 6.2-8.8 



Brownsville, Texas. ... (9) 14. 8-15. 3 4.6-4.9 6.4-6.8 16. 9-17. 6 6.3-6.4 

 Jemez Springs, New 



Mexico (3) 1 3. 5-1 6. 5 4-4.7 5.4-6.6 17.8-20.8 7-7.8 



Roebles Ranch, Arizona(3) 15-15. 8 4.4-4.6 6.4-6.7 18. 3-19. 2 6.8-7.1 



Phoenix, Arizona (8) 13-15 38-4.7 5-3-6.2 I5-I7-7 5-7-^^-8 



Cottonwood, California 13.8 4 5.8 15 6 



•'"'• A single male furnishes the maximum measurements given, the others appro^imate 

 much more closely the niinimuni. 



