190 



PROCEEDINGS OF THE ACADEMY OF 



[April, 



portion of the wing beyond the wing-band heavily suffused, leaving 

 only a nearly circular hyaline spot; this varies to individuals which 

 have this portion of the wing wholly hyaline. In the paler series 

 the majority of specimens show this latter condition, but great 

 variation everywhere exists. 



In coloration the present material shows all phases of intensifica- 

 tion and recession of color pattern, tegmina ranging from those which 

 are nearly immaculate to a much mottled and speckled type, and 

 individuals which are in general coloration very pale to others which 

 are very dark. In the present species the color pattern is most 

 pronounced in dark individuals and is often almost obsolete in very 

 pale specimens. 



This ammophilous species is found everywhere in sandy situations 

 over the coastal plain of the southeastern United States ; it was taken 

 at the fall line (Petersburg, Weldon, Columbia, Augusta), but has not 

 been definitely recorded from the Piedmont plateau. The range 

 of the species extends far northward, and, south of the fall line, far 

 westward of the region treated in the present paper. 



Trimerotropis maritima (Harris). 



Plumpoint, Maryland, VIII, 10, 1913, 



(W. T. McAfee), 2 c?, 1 9 , 1 juv. 9 ; 



VII, 7, 1912, X, 18, 1912, 1 c?, 69, 

 [all U. S. N. M.]. 



Piney Point, Md., VII, 4, 1879, 1 9 ; 



VIII, 12, 1878, 1 9 , [U. S. N. M.]. 

 Cedar Island, Virginia, VII, 13, 1914, 



(H. G. Dyar), 2 <?, [U. S. N. M.]. 

 Fortress Monroe, Va., VI, 8, 1884, 



1 c?, [Hebard Cln.]. 

 Oceanview, Va., VIII, 9 and 10, 1904, 



(A. N. Caudell), 6 c?, 19, [U. S. 



N. M.l. 



Beaufort, North Carolina, end of VII, 

 1909, (F. Sherman Jr.), 2 c?, 19, 

 [N. C. Dept, Agr.j. 



Wilmington, N. C, VII, 1906, (R. S. 

 Wolgum), 4 c?, 19, [N. C. Dept. 

 Agr.]. 



Smith Island, N. C, X, 1906, (F. Sher- 

 man Jr.), 5 c?, 19, [N. C. Dept. 

 Agr.]. 



Atlantic Beach, Florida, VIII, 25, 1911, 

 (R. & H.; on strand), 1 c?, 1 9. 



As previously stated by the authors, two of the six females recorded 

 from Cape Henry, Virginia, have the caudal tibiae showing a pinkish 

 suffusion. No intergradation whatever with T. citrina is to be found, 

 the hypothesis that hybridization with that species occurred, 60 being 

 due to the fact that it was not recognized that both red and yellow 

 tibiae are found in maritima. It is true that over the greater portion 

 of the range of the present insect, individuals of the species have yel- 

 low tibiae, but from Cape May, New Jersey, southward, specimens are 

 sometimes met with having reddish tibiae. Of the series here recorded 

 one male (Oceanview) and one female (Plumpoint) have the caudal 



60 Morse, Carnegie Inst. Wash., Publ. No. 18, p. 38, (1904). See also Rehn 

 and Hebard, Proc. Acad. Nat. Sci. Phila., 1910, p. 631, (1911). 



