4 PROCEEDINGS OF THE NATIONAL MUSEUM, VOL. 62. 
ber of large and long setae at apex, length 1611; width at base 100; 
spiracles not observed; derm pores of one sort only, small circular to 
oval disk pores with oval centers and six loculi, these probably in 
definite arrangement, never clustered; derm setae and “spines” 
much more numerous than pores particularly on dorsum, these simi- 
lar in size and shape except at body margin, those on dorsum aver- 
aging about 43 long, only the base showing the difference; margin 
of body with a series of relatively very long, prominent setae, each 
Cae 
CS 
AGENTS 
NIRS 4 
SSS 
— 
“Hee 
MG SE 
a WERE 
ap (ABS 
iS ZS (= <a 
“\) SSS SSR 
ROAR Ay 
WIS <A) 
Naga 
ih \ rd a ye: 
., Niane Ne 
wel, 
rat 
FIG. 2.—DROSICHA MASKELLI (COCKERELL). A, LARVA, DORSAL SPINE AND SETA, X500; B, LARVA, 
DORSAL PORE, X1,500; C, LARVA, CLAW, X640; D, ADULT MALE, WING, X12; E, LARVA, DORSAL 
AND VENTRAL, X57.5. 
with a high basal collar, those along abdomen and on thorax not 
conspicuously shorter than the terminal setae as in some other species 
of the genus, the length of same in microns as follows: apical pair 
518, second and third pairs (from apex) about 464; remaining abdom- 
inal pairs progressively shorter, prothoracic, 240; anal tube simple, 
without the double pore collar of many genera at its inner end, with 
a discontinuous circle of disk pores around its mouth; with a single, 
relatively large ventral cicatrix. 
