264 DAVENPORT ACADEMY OF SCIENCES. 



gradually tapering posteriorly. Antennae slender, about one- 

 third the length of the body, the third joint slightly clavate and 

 distinctly serrate ; the thumb or nipple is small and near the apex 

 of the joint, which bears two or three short hairs. There are, 

 apparently, six rows of very much elongated, tapering, fleshy 

 projections which are more or less notched or toothed, bearing 

 three or four acute lobes at the tip, on the head and thoracic seg- 

 ments ; and four rows of similar projections on the anterior six 

 segments of the abdomen, those of the first three segments grow- 

 ing gradually shorter, while those of the following three segments 

 are very much reduced and tubercle-like ; the remaining two seg- 

 ments bear no tubercles ; on the last segment are but four small 

 bristles. The color varies somewhat from yellow to orange and 

 that of the eyes from dark purple to black. 



The eggs deposited by the stem-mother are about o.a"""' in 

 length and rather less in diameter ; they are oval, highly polished 

 and pale yellow, growing gradually darker by age, when a distinct 

 sculpturing of obliquely arranged rows of hexagonal depressions 

 makes its appearance. 



The young larvae hatched from these eggs are pale yellow, the 

 . eyes red and the antennae, legs and warts slightly dusky. The 

 warts are rather prominent, conical, and bear a short but stout 

 and more or less cylindrical spine at the apex. 



Pupa. — lycngth about o.6™"-. Color yellow to orange; eyes 

 dark purplish-brown. The fleshy projections are still longer 

 than those of the females and more sharply toothed or serrate, 

 the tip is more distinctly rounded and surrounded by three or 

 four triangular teeth, while the whole surface of the body is 

 densely covered with acute tubercles. The antennae are about 

 one-fourth of the length of the body, the third joint is smooth 

 and slightly fusiform. In other respects it resembles the stem- 

 mother. 



Winged migrant. — I^ength of body 0.6™™ to i™"-. Expanse 

 of wings 2 to 2.4""-- Color orange. Meso thorax and sternal 

 plate blackish ; head, antennae and legs dusky ; eyes dark pur- 

 plish ; wings faintly brownish, the veins and stigma darker. 

 There is a transverse row of four dusky, roundish swellings ante- 

 riorly and two similar swellings posteriorly on the prothorax, the 



