1919.] NATURAL SCIENCES OF PHILADELPHIA. 89 



tures of the species in mind, intertexta will not be confused with 

 any other, while its hygrophilous tendencies also serve as an addi- 

 tional aid to its recognition. 



Morphological Notes. — In every series of any size of this species 

 we find the most striking extremes in the variation in the outline 

 of the fastigium, particularly of the males. We have figured the 

 extremes of that sex of two series, which will show more graphic- 

 ally than words the variability in the production, degree of angu- 

 lation or roundness of the outline of the fastigium. The greater 

 or lesser degree of projection of the fastigium has, of course, an 

 evident influence on the form of the fastigio-facial angle, when 

 seen from the side, and with this is correlated some variation in 

 the shape of the basal outline of the eye, the dorso-cephalic section 

 being more strongl}^ acute angulate in those with the fastigium 

 more produced, and more produced rounded in those with the 

 fastigium relatively shorter. Aside from this, however, the form 

 of the eyes varies decidedly and entirely individually, the greatest 

 width contained in one extreme one and one-half times in the 

 greatest depth of the same, and in the other extreme one and 

 three-quarters times in the greatest depth. Considerable indi- 

 vidual variation in the width and relative depth of the sulcation 

 of the frontal costa is evident in the series, this being purely indi- 

 vidual. 



Measurements (in millimeters). 



Length of Length of Length of Length of 

 cf body. pronotum. tegmen. caudal femur. 



Anglesea, New Jersey 32 .5.1 23 18.6 



Anglesea, New Jersey. . 31.7 5 22.3 17.8 



Cape May, New Jersey 30 5 22.5 17.7 



Cape May, New Jersey 34.1 5.7 24 18.4 



Millenbeck, Virginia 33.5 5.6 25.2 21 



Wrightsville, North CaroHna 39 5.8 27.3 22 



Isle of Palms, South Carohna 37.7 6 25 20.9 



Tybee Island, Georgia 36 5.6 26.2 20.5 



Tybee Island, Georgia 42.5 6.9 29 22.7 



Pablo Beach, Florida 26.3 5.6 25.9 20 



Pablo Beach, Florida 40.7 6 28.8 21.9 



Homestead, Florida 35.1 5.7 25.3 19.7 



Homestead, Florida 39.5 6 27.5 21.2 



Big Pine Key, Florida 32.3 5 24 18.7 



Big Pine Key, Florida 36.7 5.9 26.4 21.5 



Indian Beach, Florida 42 7 29.5 24.5 



Indian Beach, Florida 40.6 6.4 27.8 22.6 



Cedar Keys, Florida 36.5 5.5 25.5 22.3 



Cedar Keys, Florida 38.2 5.8 25 20.5 



9 



Angle.sea, New Jersey 46.5 8 32.5 26 



Anglesea, New Jersey 47.3 8 34.2 26.9 



