INSECUTOR INSCITI^ MENSTRUUS 159 



base and the distal part (about one-eighth the length of the 

 proboscis) very dark; labellse dark; palpi about one-fourth the 

 length of the proboscis, yellow, loosely covered with dark 

 brown and thin whitish scales, and brown hairs, the effect 

 being a mottled yellow and brown, the last joint short and 

 dark ; clypeus brown, pruinose, a row of minute hairs on the 

 frontal margin ; eyes reddish brown. 



Thorax : prothoracic lobes lateral, yellow, covered with light 

 glistening curved scales and light bristles ; mesonotum yellow, 

 a dark rich reddish brown band across the cephalic margin and 

 a median line extending almost to the "bare space," covered 

 with light yellowish-white glistening curved scales, smaller on 

 the cephalad portion, larger toward the scutellum, many light 

 bristles on the disk, a lateral row and a heavy bunch of them at 

 the wing joint ; scutellum markedly trilobed, light, covered by 

 long glistening yellowish-white curved scales, such as are found 

 on the mesonotum, and with very heavy marginal bristles 

 showing three or even four rows ; metanonum pale, yellowish, 

 pruinose ; pleura yellow with white flat long scales and light 

 bristles. 



Abdomen fawn colored, showing some tendency to banding 

 in the integument. The scaling seems to vary, so that any 

 general statement about one specimen may not be accurate for 

 another. The first segment shows some white scales as a 

 basal bunch of long scales, in some specimens slightly curved, 

 otherwise the abdomen is closely covered with rather long 

 flat yellow (ochraceous) scales, a few dark scales irregularly 

 placed, segmental and terminal bristles yellow ; laterally the 

 scales are lighter and sometimes appear as indefinite light 

 spots. The venter is mostly white scaled with some dark 

 scales rather irregularly placed, and light hairs. As on the 

 dorsal segments these ventral ones show some tendency to 

 banding in the integument, but this apparently varies in the 

 individual. The terminal segment is entirely light ; cerci dark. 



Legs as a whole are yellow with brown bands ; coxae and 

 trochanters yellow, mostly white, and a few brown scales, the 

 distal margin of the trochanters fawn colored; femora yellow 



