354 PROCrU'lDINGS of the national museum. vou51. 



larva, but narrower in proportion. Margin with prominent Granu- 

 lations; the teeth rounded and approximate. 



Pupa case (fig. 1). — Size 1.12 mm. b}^ 0.768 mm.; shape oval, 

 broadest across the second abdominal segment. There is a distinct 

 median ridge, most pronounced upon the abdomen, and from this 

 pass outward and caudad three narrow ridges which extend nearlj- 

 to the margin. On the cephalic portion semicircular transparent 

 "eye sUts" are noticeable; color under the microscope rather dark 

 brown. The submarginal area is unevenly pigmented, giving it a 

 striated and more or less granular appearance. The dentate rim is 

 slightly darker than the submarginal area. On the submarginal area 

 of the thorax there are 10 spines forming an even row. These are 

 short (fig. 4) and do not extend to the margin of the case. Just 

 caudad of the thoracic suture on the submarginal area of the abdomen 

 there is a pair of sLmdar spines, but no others on this area. On the 

 median ridge of the thorax there are four pairs of very minute spines 

 and one on the median ridge on the first abdominal segment. On the 

 subdorsal area of the abdomen there are six pairs of spines forming 

 a row down each side near the median ridge. These are of about the 

 same size as those forming the submarginal ring on the thorax. On 

 each abdominal segment upon the median ridge there is a pair of 

 small circular pore-like areas, indicating the position of setae in some 

 of the related species. The vasiform orifice (fig. 2) is small and 

 situated at the extremity of the median ridge. It is subcircular in 

 outline and the caudal and lateral margins present numerous folds. 

 The operculum is similar in shape, but comparatively broad. It fills 

 only slightly over haK of the orifice, but obscures the Hngula. The 

 margin (fig, 3) is dentate, the teeth being rather close together, 

 making the interspaces very narrow. The extremities of the teeth 

 are evenly rounded and at their bases all around the case there is a 

 row of minute clear pore-like areas. A space of 0.1 mm. is occupied 

 by about eight teeth. 



Adult female. — Length from vertex to tip of abdomen 1.168 mm.; 

 color yellowish, shaded on the head, thorax, genitalia, and append- 

 ages with dusky. Eyes dark brown; antennae broken from the 

 type specimen; legs dark smoky, hind femur 0.208 mm., hind tibia 

 0.432 mm. Foot normal, with the paronychium rather broad and 

 hairy. Ovipositor short and acute. Vasiform orifice (fig. 7) sur- 

 rounded by a dark area, elliptic transverse, 0.045 mm., broad; oper- 

 culum subcordate with the indentation caudad; lingula observable 

 only near the operculum, the remaining portion having been obscm-ed 

 in making the mount. 



Forewing (fig. 9) 1 ,28 mm, long and 0.49 mm. wide at its widest part. 

 Radial sector rather prominent; cubitus distinct but fine. Wings 

 transparent excepting for two transvei-se bands of a reddish color. 

 The distal band is some distance from the extremity of the wing 



