112 



KANSAS UNIVERSITY QUARTERLY. 



The basal fourth, or a little more, of the galea is membranous, and 

 is very flexible, evidently permitting retraction of the firmer portion. 

 Under a moderately high magnification, it shows both longitudinal 

 and transverse striation. The flaps or edges approach each other 

 above, though perhaps not as regularly as indicated in the drawing. 

 The opaque, firm portion is about the three-fourths of the entire length, 

 and is scarcely longer than the sucking parts above. The upper 

 margins touch each other before the middle, and thence to the end 

 are not easily distinguishable, forming a closed, cylindrical, some- 

 what irregular tube, for the reception of the palpifers, paraglossae 

 and ligula. The tube is, of course, not united above, and the enclosed 

 parts may be easily lifted out of it by the divergence of the flaps. At 

 the tip, the elongate, spoon-shaped labella lie normally parallel, but 

 are easily divaricate. They have each, on the inner approximated 

 side, about twenty transverse, double rows of fimbriae. The outer 

 side has each about fifty small, rounded transparent spots, more 

 numerous near the tip. They are evidently sense-organs, though 

 entirely destitute of bristles. 



Male forceps of BhapMomidas Acton Coq. 



The paraglossae form a smooth, slender, nearly cylindrical, tapering 

 tube, the infolded margins below coming in contact throughout nearly 

 the entire length, diverging at the base and tip. The tip is smooth 

 and thin, like the half of a cylinder, and obtuse. There is no indica- 

 tion whatever of a median division. The ligula is a little shorter than 

 the paraglossae, united with .the upper organ by suture at the base. 

 The distal extremity is sharply pointed and delicate, and, throughout 

 its length, on the upper side, there is a slender, deep groove, forming, 

 when inclosed within the paraglossae, a nearly perfect tube. The 

 palpifers are evidently more functional here than in Apiocera, though 

 it is difficult to say what that function is, as they are much shorter 

 than the paraglossae. They may serve as a support for the basal 

 membranous portion of the galea. 



