1912.] NATURAL SCIENCES OF PHILADELPHIA. 251 



Macneillia obscura (Sc). 



Eritettix sylvestrus Blatchley, A Nature Wooing, pp. 192, 219, 1902. 



Miami, Fla., March 28, 1910; 2c?,4n. 

 Homestead, Fla., March 19, 1910; 1 9 . 



There is great variation in this species, both in general coloration 

 and in the intensity of the color pattern. In one of the males from 

 Miami the general color is Vandyke brown gradually changing dorsad 

 to seal-brown on all but the upper edge of the wings, the dorsal 

 median section of the pronotum between the supplementary carinse 

 and the corresponding portion of the head; these latter portions of 

 the insect are clay color, naturally making a striking contrast. The 

 other adult male from the same locality is nearly uniform prout's 

 brown in color. This diversity of coloration is found throughout 

 the series from other localities which we have studied. 



We have received for examination one male and two females of 

 this species from Ormond, Fla., taken April 10, 1899, by W. S. 

 Blatchley. A male and female were correctly recorded as this species 

 in A Nature Wooing, but the other female, which is highly colored 

 and has the vertex slightly more produced, was described as Eritettix 

 sylvestrus in that work. The species was described from two females, 

 but the other type specimen has been destroyed. In the absence 

 of a large series such an error is easily understood. We have before 

 us females which agree perfectly with Blatchley's type, and in the 

 frequent specimens which have the lateral carinse strikingly whitish, 

 the general superficial resemblance to Eritettix is very apparent. 

 The more unicolorous specimens often have the lateral carinse of the 

 pronotum very faint and sometimes absent. The variability of 

 this character in Eritettix has been noted by the present authors, and 

 it is likely that such will be found to be true in still other species 

 of the Truxalinse. 19 



As is almost always found to be the case with this species, the six 

 specimens from Miami were all found in an area not more than a rod 

 in diameter. All of the specimens here recorded were taken in the 

 undergrowth of the pine woods. The species may be considered 

 scarce. 

 Amblytropidia occidentalis (Sauss.). 



Miami, Fla., March 28, 1910; 5 d\ 5 9 . 

 Homestead, Fla., March 17-19, 1910; 1 d\ 2 9. 

 Long Key, Fla., March 13, 1910; 3 d", 4 9 . 



19 These Proceedings, 1910, p. 626. 



