MORGAN HEBARD 



31 



. The entire series at hand have the pronotum solidly blackish 

 chestnut, excepting the female with reduced tegmina from Cabima, 

 which has the lateral margins narrowly translucent, this becoming 

 wider latero-caudad and the disk slightly paler mcso-caudad than 

 in the other portions. 



The distal margin of the supra-anal plate of the male at hand is 

 broadly obtuse-angulate emarginate mesad, with angles rounded, 

 while the styles of the subgenital plate are crowded together mesad 

 in a deep rounded emargination. These features would usually 

 indicate specific differentiation in the Blattidae, but we feel certain 

 are, in the present case, ascribable to individual variation only. 

 Both the present insect and C. nahua (Saussure) we know now to 

 vary individually to an exceptional degree. Though the tegminal 

 and wing variation in these species is very considerable, no indi- 

 viduals of either species show any trace of transverse truncation, 

 accompanying the tegminal reduction, as is found in the Mexican 

 C. tropaia Hebard. 



In one female the ootheca, though over half extruded, is, except 

 immediately at the suture, covered by a mantle, evidently soft in 

 life, supplied with scattered hairs. In another individual the 

 ootheca, half extruded, shows no covering mantle and is seen to 

 have its sides supplied with low and rather widely spaced longi- 

 tudinal ridges. The suture of the ootheca is supplied with rather 

 widely separated nodes, each of which has its dorsal surface raised 

 in the form of the sign for division (-f-). It will be noted that this 

 is in some respects comparable to the oothecae of the species of 

 Aiiaplecta discussed in the present paper, though of less specialized 

 shape, no vertical divisions being apparent, while the suture is 

 very much weaker and more simple. 

 Dendroblatta sobrina Rehn (Plate II, figures 12 anri 13.) 

 1916. Dendroblatta sobrina Rehn, Trans. Am. Ent. Soc, xlii, p. 232, pi. xiv, figs. 



II to 14. [cf, 9 : Chinandega, Nicaragua; Pozo Azul. Costa Rica; Corozal and 



Old Panama, Panama; Porto Velho, Brazil.] 



Rio Trinidad, Panama, III, 28 to V, 5, 1911 and 1912, (Busck), 5cf , i 9, 4 juv. 



Corozal, Canal Zone, Pan., II, 12, 191 1, (Busck), i 9 ; XI, 17, 1913, (Hebard; 

 colony of adults and young on tree trunks in clearing, the Mantid, Litiirgousa 

 cayennensis Saussure also there), 3d', i 9, paratypes, 2 small juv. 



Old Panama, Pan., XI, 13, 1913, (Hebard; running about on surface of fallen 

 tree trunk), i 9, paratype. 



MEM. ENT. ENT. SOC,., 4. 



