244 BRAZILIAN ORTHOPTERA 



The available descriptions of this species leave much to be 

 desired and in consequence there exists some slight uncertainty 

 regarding the determination of this material. The relationship of 

 B. scutatus to the present form is apparently close, in fact the 

 species, as we understand them, may be identical. Two of the 

 Ceara specimens are slightly smaller than the others and in both 

 of them there is a tendency toward infuscation of the proximo- 

 sutural section of the discoidal field of the tegmina. In the male 

 from Natal the pronotal escutcheon fails to reach the caudal mar- 

 gin of the pronotum, while in all the others the margin is broadly 

 touched by the maculation. 



Blaberus bioUeyi Rehn 



1906. Blaberus biolleyi Rehn, Proc. Acad. Nat. Sci. Phila., 1905, p. 792, fig. 1- 

 [Plains of Santa Clara, Reventazon River, Costa Rica.] 



Porto Velho, Rio Madeira. (M. Bolton.) One male. 

 [U. S. N. M.] 



Caparo, Trinidad. August, 1913. (S. M. Klages.) One 

 female. [Hebard Cln.] 

 These specimens, which considerably extend the distribution 

 of the species, show certain differences from the type, but, after a 

 careful examination of all the available material belonging to the 

 section of the genus containing this species, we find it impossible 

 to locate any constant noteworthy differences except in the pro- 

 notal pattern, the paler base coloration of the pronotum and 

 tegmina and the larger size of the Caparo female. As shown in 

 the original figure the type has the paired pattern of the pronotal 

 disk made up of groups of five blackish fuscous spots, diverging 

 cephalad, and the area occupied by each paired group broadening 

 in the same direction. In the Porto Velho male the spots are 

 all united in two bars, which follow exactly the same outline as 

 the groups in the type individual aad are broadly fused with the 

 black caudal margin of the disk; the small interno-caudal spots 

 of the type are here semi-detached. The Caparo female has the 

 infuscate tendency developed a step farther, the peripheral mar- 

 gin of the disk pattern remaining essentially the same, but the 

 pale central area is reduced by the presence of a pair of elongate 

 comma-shaped spots between the cephalic sections of the dark 

 pattern. The dark caudal margin is also broader laterad than 

 in the other specimens. The base color of the pronotum is 

 faintly paler, more nearly ochraceous-buff" than the yellow-ocher of 



