REHN AND HEBARD 273 



but not to the degree of the maximum from Trinidad. Other 

 specimens from Guatel, Costa Rica, are normal in this and other 

 characters. 



Southward from Guiana through Brazil the insect appears 

 to become slightly more robust. In a series from Contanamo, 

 Peru, this is appreciable, while in these the brachypterous speci- 

 mens have the humeral sinus very weakly indicated and the 

 macropterous specimens have it slightly more decided. The 

 male cerci of these specimens are also slightly more robust. 



A series from Santa Ana, Peru, taken at an elevation of three 

 thousand feet, are all verj' depauperate, averaging the smallest 

 of any series l^efore us, but otherwise normal. 



The consideral)le series from Rio de Janeiro, Brazil and Sapu- 

 cay, Paraguay, shows the features found in the series from Con- 

 tanamo, Peru, still more pronounced, though with some individual 

 variation, in the Sapucay females the ovipositor shows the great- 

 est length found in the species excepting in the females from the 

 Alto Parana (Puerto Cantera), Paraguay. 



The only geographic differences appear to be the slight increase 

 in general robustness in the southward (listril)ution in South 

 America and various ranges in ovipositor length, which, when we 

 consider the plasticity of the species, certainly do not warrant 

 the erection of a geographic race. 



Mcdsurcmettts {in nnl'imeters) of extreiytes 



O o3 O- C~ O 



_r._ ^'q _;;0 ^~ _~ "> 



M-j' Mc 5fii_ ^- ifii 



■71 t^ ta. Si Ci; £u 



Long Dittoii, 



Dominica ... 11.7-14 2.9-3.3 5.8-0.3 11-11 7 2-2.2 



Philadelphia, 



Costa Rica... 13.5 3.2 18 9 13.6 2.3 



Philadelphia, 



Costa Rica... 13.2-14.8 3. 3-3.(5 0.0-7.(1 13.4-14.2 2.3-2.4 



Rio Mato, Ven- 

 ezuela 1.5 . .5-16 .5 3.2-3.3 10.9-19.7 129 2 . 3-2 . 4 



La Piedrita, Ven- 

 ezuela 12.5 3.4 0.3 13.7 2.3 



Caparo,Trini(la<l 14.3-10.4 3-3.4 15-18 9 12-14.3 2.1-2.0 



TRANS. AM. EXT. .SQC, XLI. 

 18 



