204 



NORTH AMERICAN BLATTIDAE 



regularly outward, the convex surface is subchitinous, the inner surface soft, the 

 apex more chitinous, not enlarged, flattened and blunt. Male subgenital plate 

 convex, asymmetrical; distal margin broadly convex from sinistral base to mesal 

 portion of dextral half, there rounding sharply into a deep concave emargination at 

 dextral base, within which the margin is much softer and subchitinous; minute, 

 slender, cylindrical styles are found on this margin at the inner bases of the cerci, the 

 sinistral four times, the dextral six times, as long as broad. Female subgenital 

 plate large and convex, with distal margin regularly convex to mesal portion, which 

 is slightly produced and rounded. Cephalic femora with ventro-cephalic margins 

 supplied proximad with three or four stout, rather short, spines, succeeded by a 

 closely-set row of stout hairs, terminated by a single stout, rather short distal spine; 

 other ventral femoral margins moderately hairy with similar single distal spines. 



Measurements {in millimeters) 



Length of Length of Width of Lengtli of Width of 



C^ body pronotum pronotum tegmen tegmen 



Key West, Florida (15) 42.2-45.1 12. 3-13. 6 17. 3-18. 9 48-51.8 18. 8-19. 4 



9 

 Key West, Florida (28) 48.7-54-8 14.3-14-6 20.9-22.1 48-50.8 19.8-20.6 



We have noted in other tropical series of this and other species 

 of the genus that, though large series from one place seldom show 

 very decided differences in size or marking, over the distribution 

 of each species frequent more decided differences are found between 

 different series. 



The present species has become firmly established in the United 

 States at Key West, Florida.^" 



Specimens Examined :^'^^ 54; 16 males, 28 females and 10 immature examples. 



32' It has been recorded from that locality as atropos by Rehn, Ent. News xix, p. 441, 

 (1908); as cubensis by Rehn and Hebard, Ent. News, xxi, p. 103, (1910), and by those 

 authors as atropos, Proc. Acad. Nat. Sci. Phila., 1912, p. 241, (1912), and Proc. Acad. 

 Nat. Sci. Phila., 1914, p. 381, (1914)- 



328 In addition the following exotic material is now before us. 



Santiago de Cuba, Cuba, II, 24, 1902, (S. H. Hamilton), 3 c^, 29,1 juv., [A. N. S. P.). 

 (Recorded as B. atropos in 1903 by Rehn.) 



Santiago de las Vegas, Cuba, IV, 1905, (G. Dimmock), i d", fU. S. N. M.]. 



Tekanto, Yucatan, Mexico, i cf, [A. N. S. P.]. (Recorded as B. trapezoideus in 1902 

 by Rehn.) 



Tunkas, Yucatan, Mexico, i juv., [A. N. S. P.]. 



Progreso, Yucatan, Mexico, I juv., [A. N. S. P.]. 



Merida, Yucatan, Mexico, (Gaumer), icf, [Hebard Cln.]. 



Benque Viejo, British Honduras, HI, 1909, (W. H. Sligh), lo", [U. S. N. M.]. 



