312 
Psyche 
[September 
Figs. 10-16. (19 ANSP). Blaberus brasilianus Saussure. Natal, Brazil. 
11. (23 ANSP). Blaberus scutatus Saussure (paratype of B. scutata var. 
obscura S. and Z.). 12. (8 ANSP). Blaberus minor Saussure. Argentina 
(det. Hebard). 13. (14 ANSP). Blaberus fusiformis Walker. Santa Cruz 
de la Sierra, Bolivia (det. Hebard). 14. (32 ANSP). Blaberus colosseus 
(Illiger). Fyzabad, Trinidad (det. Roth). 15. (N). Eublaberus posticus 
(Erichson). Panama (det. Roth). 16. (N). Eublaberus distanti (Kirby). 
Trinidad (det. Roth), (scale = 10 mm). 
To a considerable extent the male genitalia of the genera placed 
in the Blaberini, show distinct trends (as do the female genitalia and 
proventricular characters used by McKittrick). It is difficult to 
separate them into the 2 tribes Blaberini and Byrsotriini which Mc- 
Kittrick used and I have combined them into the Blaberini. How- 
ever, certain of the genera show closer relationships to one another 
than to others and therefore I have arranged them in generic groups. 
In the Blaberini, L2d is solidly joined to L 2 vm, and may or 
