192 STUDIES IN AMERICAN TETTIGONIIDAE (oRTHOPTERa) 



terous specimen of the present insect; tlie otlier, caiidatum, on 

 three specimens exhibiting a maximum of ovipositor length. 

 When we consider the prevalence of macropterism and brachyp- 

 terism in the species of this and many other genera, and know 

 that such forms are often if not always the offspring of the same 

 parent, we feel satisfied that such names are absolute synonyms, 

 the use of which can only lead to confusion and misconception 

 of the importance of trinomials designating valid and constant 

 geographic races. Morse's very large series and our own speci- 

 mens show considerable variation in length of ovipositor and 

 caudal femur; the material showing the caudal femora rather 

 short and the ovipositor rather long, named coudafum by Morse, 

 is not worthy of name designation as there is no geographic 

 correlation and such variations are frequent in the species of the 

 genus. 



The present species, although differing ver}^ decidedly in many 

 important characters, shows much the nearest affinity to C. 

 nenioralis, to which insect it also l^ears a closer general resem- 

 blance than to any other American species. 



The great majority of specimens before us have the limbs 

 and sides of head, pronotum and abdomen, brown; a very few 

 examples have these portions green. The females have the 

 a])domen usually rather distinctly marked dorso-mesad with a 

 double row of dark markings, while on each side is situated a 

 narrow band, usually of even darker coloration. 



The lateral lobes of the pronotum are rather similar to those 

 of nemoraUs, but are somewhat broader, with angles more broadly 

 rounded and humeral sinus slightly more appreciable. 



Macropterism is very rare, we have examined the unique 

 female in the Morse collection which exhibits this condition. 



The genicular areas of the caudal femora are weakly or not 

 at all infuscated; the genicular lobes of the same are unispinose 

 in all of the specimens we have examined; the ventral margins 

 of the caudal femora are unarmed. 



The ovipositor length is as follows: Sisson, Cafifornia, 14.2- 

 15.7; Shasta County, California, 11.1; Sentinel, California, 

 10.3-12.6; Mariposa Grove, California, 10.1-11; Mill Valley, 

 Cafifornia, 8.7 mm. The ovipositor is usually very weakly 

 curved but in some specimens it is almost absolutely' straight. 



