216 PROCEEDINGS OF THE ACADEMY OF [April, 



Melanoplus australis Morse. PI. XIII, figs. 3, 4. 



Yemassee, South Carolina, IX, 4, 1911, (R. & H.), 54 d% 6 9 . 

 Sandfly, Georgia, IX, 3, 1911, (R. & H.), 65 cf, 43 9. 

 Isle of Hope, Ga., IX, 3, 1911, (R. & H.), 41 cf, 4 juv. 9 . 



The large series of the present species shows no striking structural 

 variation. The insect is larger and more attenuate than M. decorus 

 and probably very similar to M. attenuatus in this respect. The 

 extremes in length in the present series are as follows: males 16.4 to 

 22., females 23. to 27. mm. The males average in length about 19. mm. 



In coloration individuals range from lemon chrome, frequently 

 suffused with greenish or orange, to army brown, usually showing 

 traces of a yellowish suffusion. The species is the most brilliantly 

 colored of the group, individuals in life being very striking. The 

 distinctive differences in color pattern are discussed in the analysis 

 of the group. 



It was noted at Sandfly that the very brightly colored, yellow or 

 greenish yellow, individuals were taken on green plants, while the 

 dull yellow or brownish specimens were found among the yellowing 

 and brown fronds of the bracken. The males were active, but not 

 alert and were easy to capture ; the females were much less active and 

 were usually met with in the heavier undergrowth where much 

 greater concealment was afforded. Females from Isle of Hope are 

 represented by four immature individuals only, indicating that 

 adults of the species had been present but a very short time. 



The species was found not unusual through the low bushes, grasses 

 and low swamp-loving plants on low wet ground through the short- 

 leaf pine woods (Yemassee), very common in tall, rank, succulent 

 undergrowth in somewhat swampy gray-bark pine woods (Sandfly, 

 Isle of Hope) ; at the latter locality it was particularly numerous in 

 patches of yellow and brown bracken. 



The species was previously known from the single type specimen, 

 a male from Savannah, Georgia. 



Melanoplus attenuatus Scudder. PI. XIII, figs. 5, 6. 



Sullivan Island, South Carolina, IX, 5, Ashley Junction, S. C, VIII, 15, 1913, 



1911, (R. & H.), 1 tf\ (R.), 3 juv. o\ 3 juv. 9 . 



Magnolia, Charleston County, S. C, Augusta, Georgia, VII, 29, 1913, (R. & 



IX, 5, 1911, (H.), 9 <?. H.), 3 juv. tf, 1 juv. 9 . 



The striking dentate plications on each side of the supra-anal 

 plate near its base, are more pronounced in the specimen from Sullivan 

 Island than in those from Magnolia. The extremes in length in the 

 adult males before us are 18.5 and 20.6 mm. 



In general coloration the insects are empire yellow much suffused 



