316 STUDIES IN AMERICAN TETTIGONIIDAE (oRTHOPTERA) 



collected by the authors, these representing all but two of the 

 forms. 



Within the area covered by the present paper we find the genus 

 Amhlycorypha represented by one or more species over a consider- 

 able portion of the country. The most northern points from 

 which it is known are the White Mountain region, New Hampshire; 

 Montreal, Canada and Miimesota, while it ranges south to the 

 Florida Keys (Big Pine Key), the Gulf Coast and across Texas 

 into Mexico and w^estward to east central Colorado (Manitou) 

 and north central (Oak Creek Canyon) and southern Arizona. 

 It does not, as far as known, reach the Pacific Coast and appar- 

 ently^ is absent from the whole northwestern portion of the United 

 States and western Canada. Over the greater portion of the area 

 covered by the genus it is represented bj^ two species, in other 

 sections by only one species, in some by three and within the 

 boundaries of the state of Texas six forms occur. The latter, of 

 course, do not all occur in any one region in the state, although 

 four foims have been secured in the vicinity of Dallas. 



In the present genus, as is occasionally true of certain other 

 genera of this family, we find specimens, occurring with others of 

 normal green coloration, which are of a uniform pinkish color. Sev- 

 eral authors have reported such individuals and there has been 

 some speculation regarding the possible cause of the same. We 

 do not intend to go into this question further than to say it appears 

 to be a manifestation of the widespread dichromatic tendency 

 of the group. However, we wish to call attention to the fact 

 that we have examined such pinkish individuals of the following 

 forms of the genus: 



A. oblongifolia. One cf. Mosholu, New York. 



A. floridana. One 9. San Pablo, Florida. 



A. floridana carinata. One 9. Wood's Hole, Massachusetts. 

 One d^ . Absecon, New Jersey. Two 9 . Cedar Springs, New 

 Jersey. 



A. rotundifolia. One 9. No locality. 



A. rohmdifolia iselyi. One 9. Iron Mountain, Missouri. 



It is well to bear in mind that the females of this genus show 

 considerable individual variation in the length (actual and relative) 

 and relative depth of the ovipositor; in consequence this append- 

 age is of diagnostic value chiefly through the general curve of the 



