214 STUDIES IN AMERICAN TETTIGONIIDAE (oRTHOPTERa) 



with a postocular reddish brown suffusion; no examples of such 

 coloration are found in southern material. In hrevipennis, when 

 the lateral lobes of the pronotum are suffused with a darker 

 color, this color usually extends upward nearly to the medio- 

 dorsal stripe of the dorsum, as the pale margins of this stripe are 

 normally very narrow in that species, and as a result the intensive 

 types of coloration in the two species are normally distinctly 

 different in appearance. In general coloration, with the excep- 

 tion of the differences mentioned above and the green male cerci, 

 this species agrees Avith brevipennis. 



The genicular areas of the caudal femora are normally not 

 darkened, in occasional specimens they are weakly infuscated; 

 the genicular lobes of the same are normally bispinose, rarely 

 they are found to be unispinose, while a single female (Wesquage 

 Beach, Rhode Island) has one genicular lobe trispinose;the ventro- 

 externai margins of the caudal femora are armed in one hundred 

 and eighty-one perfect specimens examined as follows: 

 Number of spines, 0-0 

 Number of specimens, 15 

 Number of spines, 

 Number of specimens, 



Macropterism is very rare in material from the Atlantic coastr 

 but appears to be of frequent occurrence on the Gulf coast- 

 As there is a gradual but not decided increase in size southward 

 in the distribution of the species, we find such macropterous 

 examples from the Gulf coast to be, in general appearance only, 

 very similar to C. fasciatus. 



The ovipositor is very weakly curved upward but varies to an 

 almost straight condition; specimens showing the extreme of 

 this variation are often frequently difficult to separate from fe- 

 males of brevipennis, which have the ovipositor approaching the 

 minimum length found in that species. The ovipositor length^* 

 is as follows: Wesquage Beach, Rhode Island, 9; Chestnut 



'■''^ Our ovipositor length measurements are, as elsewhere in the present series 

 of papers, taken from the base of the basal plica to the apex of the ovipositor; 

 this explains the measurements of other authors exceeding ours by about .4 

 mm. where the length has been taken from the juncture of ovipositor and sub- 

 genital plate to apex of ovipositor. We have not used this dimension as it is not 

 sufficiently accurate, the position of the movable subgenital plate affecting it. 



