24 



legs and antennae and assumes the apodous type of the female in its 

 second stage, differing, however, from the latter more particularly in 

 its more elongate form and in the much darker brown color of the end 

 of the body, which coloration here extends over the last six segments. 

 It measures now about 2 mm in length by 0.8 ram in diameter at the 

 anterior end. The last six segments in the cast skin are yellowish- 

 brown, becoming darker toward the end, and all are densely covered 

 with small sharp points. Pores and stigmatal tubes similar to those 

 of the female in the second stage. 



Male, fourth stage. — This stage, upon casting its apodous skin, which 

 act I fortunately observed, regains its legs and antennae, but loses 

 its rostrum. Its length is 2.6 mm by l mm in diameter. Color orange, 

 with legs and antennae somewhat paler. Eyes dark purplish, rather 

 large, and placed close to the antennae on the under side of the head. 

 Shape elliptical, rounded at both encis. All the segments are well 

 developed, and the combined head and thorax is longer than the 

 abdomen. The mesothorax now shows traces of the future wingpads. 

 In the recently emerged larva of this stage the front of the head is 

 simply convex, but becomes more or less prominently conical with 

 advancing age. The legs are rather long and stout, with the digitules 

 fine and hair-like. The whole body is sparsely covered with brownish 

 hairs, which grow more numerous and longer around the end of the 

 body. Antenna nine-jointed, although in the recently emerged larva 

 the division between the second and third joint is not strongly marked. 

 Joint one is stoutest; all the others diminish gradually in diameter. 

 The three basal joints are longest, and nearly subequal in length; the 

 following five joints are shortest, subequal in length, and somewhat 

 stouter at the apex. The last joint is somewhat longer than the eighth, 

 cylindrical, and rounded at the apex. All bear a few fine hairs, which 

 grow gradually longer toward the end; the last joint bears also a few 

 short spines at the apex. 



M ale, pupa, or fifth stage. — The cast skin only has thus far been 

 observed. It measured about 1.4 mm in length. Its color is orange, 

 with antennae and legs dusky; the antennae annulated with white. 

 Antennae nine-jointed, very long and stout, cylindrical and of equal 

 diameter, reaching to the abdomen; joint one is slightly stouter than 

 the rest, but all are subequal in length; the last is bluntly rounded at 

 the apex; all are destitute of hairs or spines. Wing pads very broad, 

 reaching beyond hind coxae. Legs very long and stout; the tarsi about 

 one-third the length of the tibia, and apparently without a claw. 



Male, imago (fig. 8). — Length about 2 mm ; length of wings 2.4 mm by 

 0.8 rara broad; expanse 5 mm . General color red, with the under side of 

 the abdomen brown ; the two basal joints of the antennae reddisn, and 

 the last three or four joints yellow, the intermediate joints black. 

 Eyes, legs, mesothorax above, the mesosternal and metasternal plate, a 

 curved line each side of the prothorax, as also two converging lines in 



