228 NORTH AMERICAN BLATTIDAE 



Description of Type. — Size rather small, form acute elliptical. Head with width 

 between eyes very brief, much less than half that between ocelli. Pronotum con- 

 vexo-trigonal, the basal line being represented by the moderately convex caudal 

 margin; surface covered with minute hairs, cephalic margin more thickly clothed 

 with stouter, longer hairs. Tegmina elongate, subcoriaceous and weakly glossy, 

 apex well rounded; costal margin of tegmina and wings supplied with minute hairs, 

 on the tegmina these become as heavy proximad as on the cephalic margin of the 

 (pronotum. Important characters of armament of limbs and genitalic features 

 given in key. Concealed genital hook very slender, elongate, reaching to near 

 apex of production of supra-anal plate, curving gently inward to near distal ex- 

 tremity, which is sharply curved inward, slightly enlarged, with apex sharp, directed 

 proximad. Dextro-dorsal concealed genital plate, a rather large, flattened, smooth, 

 corneous finger, somewhat arcuate; dextral- ventral concealed genital plate, a large, 

 rounded, corneous disk, moderately concave, with dorsal margins narrowly and 

 feebly shagreenous. Subgenital plate bulbous, irregular in outline, shallowly con- 

 cavo-emarginate distad (as given in generic discussion). 



Allotype. — 9 ; same data as type. [Hebard Collection.] 



Description of Allotype.— Very unlike male, apterous, size much larger, form 

 more broadly acute elliptical. Dorsal surface finely roughened, clothed with very 

 short, minute hairs, along the margins these hairs are longer and heavier, particu- 

 larly in the cephalic half. Pronotum broad, cephalic margin arcuate at an angle of 

 about 90°, caudal margin weakly produced mesad, with sides broadly and weakly 

 concave. Supra-anal plate transverse, weakly trapeziform; caudal margin very 

 broadly convex, with an indication of mesal emargination. Subgenital plate large, 

 roundly produced mesad. 



Measurements {in millimeters) 



_P[ Length of Length of Width of Length of Width of 



body pronotum pronotum tegnien tegmen 



Kits Peak Rincon, Ari- 

 zona 18 5 7.7 23.6 8.6 



San Lorenzo, Coahuila, 



Mexico (2) 17. 2-18. 4 5 6.9-7 I9-5-2I-6 7.8-8.4 



San Jose del Cabo, 



Lower California, /v/>(' 13.3 4.2 6.1 15-6 6.2 



San Jose del Cabo, 

 Lower California, 

 paratypes (12)13-18 3 . 9-4 .75. 7-6 .8 15. 3-20 . 9 6-7 . 8 



Comondu, Lower Cali- 

 fornia (4) 14. 5-15 3.9-4.3 5.8-6.2 18. 3-19. 5 6.7-6.9 



.Sierra El Tosti, Lower 



California (3) 13. 7- 14 4-4.2 5.8-6.1 16.3-1S.3 5,9-6.1 



;San Pedro, Lower Cali- 



iornia ( i ) 13 4.2 6.1 15.4 6.2 



