19 10.] NATURAL SCIENCES OF PHILADELPHIA. 203 



number from the State secured by various collectors at numerous 

 localities. These all bear out our above-expressed general conclu- 

 sions. The Taunton series form a particularly interesting illustra- 

 tion of intergradation, which is also marked in the other lots where 

 the series are of sufficient size. The only exception to the latter 

 statement seems to be that the alutacea phase is very rare on the 

 barrier beach coastal dunes, as we have seen but one individual ( 9 ) 

 of that phase which was taken in a strand habitat (Seaside Park, 

 New Jersey). The Isle of Palms individuals also show a tendency 

 toward alutacea in the indication of an incomplete stripe. 



We have examined a series of Key West, Florida, individuals of 

 both sexes, all being rubiginosa phase, and these show great variation 

 in the width of the head. 



The generally greater size of the individuals from the barrier 

 beaches of New Jersey and longer tegmina of the same, when com- 

 pared with material from the interior pine-land of the State, a point 

 to which we have already called attention, 70 loses some of its 

 apparent significance when the large series from that State now 

 available are considered. The tegminal length is now known to be 

 individually variable in both the pine-land and beach specimens. 

 Southward the difference between the strand and more interior 

 material is less pronounced than in New Jersey, although the largest 

 individuals from a general region are, as a rule, from the beaches. 

 This is not invariable, as Winter Park, North Carolina; Yemassee, 

 South Carolina; Isle of Hope and Brunswick, Georgia, and Jackson- 

 ville, Florida, all localities removed from the strand proper, are 

 represented by very large individuals. The Isle of Palms specimens, 

 which are from typical strand situations, are of but average size. 



Measurements (in millimeters) of extremes of the series here 



examined are as follows : 



Length of 

 Length of Length of Length of caudal 



body. pronotum. tegmen. femur. 



cf Ashley Junction, S. C. 



{alutacea) 28.2 6.1 24.3 17. 



cf Brunswick, Ga. 



(rubiginosa) 28.3 6.7 25.5 16.1 



cf Albany, Ga. 



(alutacea) 27.5 6. 25.5 16.5 



cf Tybee Island, Ga. 



(rubiginosa) 36.2 8.4 32. 19.4 



cf Billy's Island, Ga. 



(rubiginosa) 36. 7.9 32.5 19.8 



70 Proc. Acad. Nat. Sci. Phila., 1907, p. 293, (1907). 



