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NO. 2156. SUBFAMILY ALEYRODTNAE—QUAINTANCE <C BAKER. 417 



The operculum is of very much the same shape as the orifice, but 

 indented on the lateral margins. It almost fills the orifice and 

 obscures the lingula, which is spatulate. On either side of the vasi- 

 form orifice a small seta is situated. Margin of case marked by a 

 large number of closely appressed sections formed by the sutures of 

 wax tubes. 



Adult male. — Length from vertex to tip of claspers 0.85 mm,; 

 color yellowish, with a slight tinge of brown on the thorax; ocelli 

 dusky; eyes dark brown, almost black; vertex rounded; antennae 

 (fig. 10) of seven segments. Segment I subcylindric, short and 

 thick, 0,018 mm, long; II 0.045 mm,, subpyriform, armed on its dis- 

 tal extremit}'- with a number of hairs; III 0.096 mm., subcylindric, 

 narrow proximad, where it is covered with numerous imbrications, 

 distal two- thirds armed with about 15 narrow transverse sensoria, 

 or annulations, the distal extremity also armed with a circular fringed 

 sensorium the marginal fringe of which is composed of three or four 

 stout hairs; IV 0.012 mm., with three annular sensoria; V 0.012 

 mm., also with three annular sensoria, and a circular fringed senso- 

 rium; VI 0.063 mm., subcylindric, narrower and imbricated proxi- 

 mad, the distal two-thirds armed with 10 or 12 annular sensoria, and 

 the distal extremity with a fringed sensorium; VII 0.06 mm,, sub- 

 cyhndric, armed with about 10 annular sensoria, and near the distal 

 extremity one or two small circular fringed ones; distal extremity 

 tipped with a rather stout spine. Legs almost transparent; distal 

 extremity of the hind tibia armed with two prominent spines on its 

 inner edge ; proximal segment of tarsus armed on its distal extremity 

 with a large spine (pi. 67, fig. 9) , Five other spines, somewhat shorter, 

 are present on the median portion of the segment in two rows, one 

 row of two spines and one row of three; distal segment of tarsus 

 with three prominent spines on its inner margin, and also a large 

 number of fine hairs; proximal segment of hind tarsus 0,088 mm.; 

 distal segment 0.06 mm, ; foot 0.015 mm. (pi. 67, fig, 8), with a median 

 hairy paronychium. Forewing (pi. 67, fig. 6) 0.72 mm, long and 0.24 

 mm, wide; radial sector bent very slightly in its median part and 

 extending almost to the distal margin ; media sometimes faintly indi- 

 cated by a shading, but usually this is not evident; cubitus fine and 

 distinct, rather long and in the usual position; margin of wings with 

 a series of bead-like structures, on which hairs are situated; color 

 clear without spots or shading; claspers (pi. 67, fig. 7) 0.1 mm, long and 

 0.06 mm. broad at shoulder, tapering, upcurved, acute at the distal 

 extremity, and armed with about five spines on each. Penis elon- 

 gate, acute, and upcurved distally, bulbous at the base. The testes 

 may be seen through the abdomen as orange-yeUow masses com- 

 posed of globular-hke bodies. The rectum leads from the vasiform 

 orifice as a narrow tube, which extends the full length of the genital 

 36399°— Pi'oc.N.M.vol.51— 16 27 



