SCHISTOCERCA, SPHINGONOTUS AND HALMENUS 



451 



the scutum. Entire metazona, to the lower yellow band, color of 

 head and dorsum of the prozona. Tegmina brown with very faintly 

 pale outer margins. Hind tibia and abdomen the same as in the type 

 of H. choristopterus except that the lateral abdominal blotches are 

 slightly larger. 



Length of body, 25 mm. 



Variations (7 specimens). — All the specimens have a median dorsal 

 carina on the pronotum, and all have a more or less prominent lateral 

 angulation to the pronotum. They differ uniformly from the Charles 

 and Indefatigable species in having the much more receding front as 

 in the type. 



In color they vary little from the type. Some have the general color 

 a little lighter brownish, and two of the males lack the brighteV upper 

 yellow stripe just below the lateral black prozonal band. One has 

 three very distinct oblique dark bands on both the outer and inner sides 

 of the hind femora, but in none do they cross the dorsal surface of the 

 femur. The tegmina of all agree with those of the type.^ except that 

 two have the outer pale marginal bands very distinct. 



MEASUREMENTS OF HALMENUS CUSPID ATUS EXPRESSED IN 

 HALF MILLIMETERS. 



HALMENUS sp..? 



From Wenman Island. 



Very similar to H. choristopterus of Charles. Wings separated 

 even more widely than*in this species, each somewhat narrowed at the 

 base and expanded distally. Colors not well preserved, but apparently 

 the same as in H. choristopterus., except that the tegmina do not have 

 white outer margins. 



One mutilated specimen taken from the stomach of a Wenman 

 mocking bird. The Halmenus must have been captured by the bird 

 on this island, for this mocking bird is peculiar to Wenman and the 

 far distant Harrington Island. It is not probable that the birds go 

 back and forth between these two islands, crossing other islands that 

 have peculiar species. 



