10 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 62. 
Adult female——External appearance, antennae and legs as de- 
scribed by Maskell and figured herewith; derm remaining somewhat 
chitinized, or clearing on treating with potassium hydroxide; spir- 
acles exactly as in crawfordi; derm with the trilocular tubular pores 
in clusters, some well in from the margin, and with quadrilocular 
disk pores dorsally, these last rather widely separated as compared 
with crawfordi, ventrally with large multilocular disk pores with 
elgonate oval centers scattered over the surface, much more closely 
Fi@. 5.—MONOPHLEBULUS PILOSIOR (MASKELL). ADULT FEMALE. A, DISK PORE, SHOWING APPEAR- 
ANCE AT DIFFERENT FOCAL POINTS, X1,500; B, DISK PORE, TWO VIEWS, X1,500; C, ABDOMINAL 
SPIRACLE, X220; D, DISK PORE, TWO VIEWS, X1,500; E, POSTERIOR LEG, X30; F, SECTION OF DORSAL 
DERM BETWEEN POSTERIOR LEGS, X220; G, TRIOCULAR TUBULAR PORE, X1,500; H, SECTION OF 
VENTRAL DERM BETWEEN POSTERIOR LEGS, X220; 1, ANTENNA, X30. 
set in the genital region; in addition with circular center, deep, 
multilocular disk pores in segmental clusters at the margin ventrally ; 
dermal setae slender, set in conical bases, small in mid-dorsal region, 
larger ventrally and much larger along the margin, scattered; derm 
spines longer and more slender than those of crawfordi, the tips hair- 
like, in this respect resembling those of fuscus, gradually increasing 
in length from center to margin of body, very abundant and closely 
crowded, this appearance depending to a considerable extent on the 
