396 PROCEEDINGS OF THE ACADEMY OF [May, 



wing length in the present species is much less in southern Florida 

 individuals than in more northern specimens and that this is par- 

 ticularly emphasized in individuals from the keys. A series of 

 fifteen male specimens from the outermost keys, Key West and the 

 Tortugas, give the following averages: Length of pronotum, 7.7 mm. 

 (7.1-8.4); length of tegmen, 34.9 (32.3-38.).!^ The females bear out 

 these facts in like manner. 



In the series from Loggerhead Key, there are three males remark- 

 able for the fact that the tegmina wholly lack maculations of any 

 kind, which gives the insects a very distinctive appearance. No 

 intermediates between this and the normal color phase were seen, 

 but no characters exist to separate the specimens from typical 

 americana, the difference being simply due to a loss of a portion of 

 the color pattern through recession. 



Though only occasional at the majority of localities, this species 

 was very common through the scrub on Key West and quite numerous 

 on Loggerhead Key in open spots where the sandy soil was covered 

 with beach plants, grasses, and prickly pear. 

 Schistocerca damnifica calidior R. and H. 



Homestead, Fla., July 10-12, 1912; 3 cf, 1 9. 



Big Pine Key, Fla., July 6, 1912; 2 d', 1 9 . 



At both of the above localities individuals were very scarce in the 

 low undergrowth of the pine woods. One male, taken at Homestead, 

 was very soft when captured, having but recently moulted into the 

 mature condition. 



Eotettix signatus Sc 



Homestead, Fla., July 10-12, 1912; 39 cf , 42 9 , 1 9 n. 



Detroit, Fla., July 12, 1912; 2 d^, 4 9 . 



The large series before us shows that not only is there great varia- 

 tion in size and tegminal length in specimens from the same locality, 

 but also that specimens from the more southern localities in the 

 species distribution average much smaller than those found further 



north. 



Measurements {in millimeters) of extremes. 



Pablo Beach, Fla. 



5 c^cf ' 399" 



Length of body 19.4-20.5 20. -26.5 



Length of pronotum 4.7-4.9 6-2~ ^'^ 



Length of tegmen 5.-6.1 7.6-8.5 



Length of caudal femur 12 .-12.6 15 . 5-16 . 6 



" For further notes on this variation see Rehn and Hebard, Proc. Acad. Nat. 

 Sci. Phila., 1912, p. 2.57. 



