SCHISTOCERCA, SPHINGONOTUS AND HALMENUS 42 1 



and there is often less black on the metazona than in the first specimen 

 described. The abdomen is sometimes paler, due to a spreading of 

 the brown over all the parts. There is only a slight variation in the 

 intensity of the color of the tegmina. 



The males and females differ from each other in no way except in 

 size. Length of tegmina of male^ 44, 41, 41, 48, 45 := 44 mm. ; of 

 female, 55, 56, 58, 55, 53, 49 = 54 mm. 



SCHISTOCERCA MELANOCERA MINOR var. nov. 



From Tagus Cove, Albemarle Island. 



Description of the Type. JFemale. — The type of the Tagus Cove 

 race on Albemarle is almost identical in color with the Charles Island 

 example, differing from it only in the following points : metazona 

 less distinctly contrasted with prozona, being of a dusky orange color 

 rather than yellow as with the Charles Island specimen, so that the 

 irregular black markings, although present, are less conspicuous ; 

 there is scarcely any black on the prothoracic femur ; yellow areas of 

 the episterna small and less conspicuous ; red of the metathoracic 

 femur paler, and second red area fused belo^v, on left side, and almost 

 so on right, with lower yellow stripe ; third or posterior spot on the 

 dorsal surface of femur well developed ; color of abdomen uniform, 

 being dark brown obscurely mottled with dusky ; distal half of the 

 postmedian part of the tegmina paler. Length of tegmina, 47 mm. 



Variatiojts (16 specimens). — The other specimens from Tagus 

 Cove show but little difference in color from the Charles Island speci- 

 mens ; specimens can be selected that duplicate the type from Charles 

 Island, while as a whole the specimens from the two islands present 

 exactly the same variations. One difference, however, is noticeable 

 in most of the Albemarle specimens and that is that the infuscation of 

 the distal half of the postmedian part of the tegmina averages slightly 

 less than in the specimens from Charles. In the specimens from both 

 the islands the yellow of the basal part of the wing just above the 

 median vein has a tendency to be so arranged as to show the dark 

 color as a longitudinal series of blotches. In most of the Tagus Cove 

 specimens the second red area of the hind femur is fused across the 

 intervening black space with the yellow line, and at least an indication 

 of the third dorsal spot is present in almost all. Length of tegmina of 

 male, 39, 39, 36, 40, 38, 38, 41 = 39 mm. ; oi female, 50, 49, 44, 49, 



43' 47' 48' 42 = 47 nini- 



These figures show that there is a very considerable difference in 



size between the grasshoppers at Tagus Cove, Albemarle and the 

 Proc. Wash. Acad. Sci., August, 1902. 



