ART. 17. MONOPHLEBINAE AND MARGARODINAE—MORRISON. if 
incompletely, remaining light yellow brown after treatment with po- 
tassium hydroxide; beak short and stout, obviously 2-segmented; with 
two pairs of thoracic and seven pairs of abdominal spiracles, the first 
rather stout triangular, with a cluster of disk pores at the opening, 
the last much smaller, cylindrical or somewhat vasiform, less chiti- 
Fic. 3.—MONOPHLEBULUS CRAWFORDI (MASKELL). ADULT FEMALE. A, ANTENNA, 57.5; B, DISK 
PORE, TWO VIEWS, X1,500; C, TRILOCULAR TUBULAR PORE, TWO VIEWS, X1,500; D, LEG, 57.5; 
E, SECTION OF VENTRAL DERM JUST ANTERIOR TO VAGINAL OPENING, 220; IF’, SECTION OF DERM 
DORSALLY BETWEEN POSTERIOR LEGS, X220, WITH DETAIL OF SPINE; G, DERM NEAR MARGIN 
DORSALLY, X220, WITH DETAIL OF SPECIALIZED SPINE, 640; H, SECTION OF DERM VENTRALLY 
BETWEEN POSTERIOR LEGS, X220, WITH DETAIL OF SPINE; I, THORACIC AND ABDOMINAL SPIRACLE, 
57.5; J, ABDOMINAL SPIRACLE, 220; K, PORTION OF TRANSVERSE BAND OF ABDOMINAL CICATRI- 
CES, X57.95. 
nized, and with a collar, usually incomplete, of disk pores surmount- 
ing its external opening; derm pores of two distinct types, one elon- 
gate, tubular, but trilocular, and with three tiny loculi alternating 
with the larger ones at the external opening, the other multilocular 
disk, with the central portion usually trilocular, but somewhat vary- 
60466—23—Proc.N.M.vol.62 41 
