254 Agricultural Experiment Station, Ituaca, N. Y. 



Mack in color, and a spot of about the sjimo size and a little 

 lightci" in color occurs in tlic basal cell along the claval suture 

 (Fig. 8, c. s) opposite the blackish tip of the clavus. The veins 

 and boundary of the basal third of the hind wings are yellowish 

 and nearly as large as those in the front wings; the remainder 

 of the veins are very indistinct: along the hind margin, the clavus 

 is slightly thickened and is brownish in color especially at the 

 tip and near the basal angle. The first abdominal segment is 

 closely joined to the thorax and has a slightly raised nearly 

 square black spot on the dorsum. The second segment, separated 

 from the first by a distinct suture and slight con^riotion, has a 

 small black mesal spot on the dorsum and a large irregulap 

 black spot on the sides. The following five segments each 

 have a broad black band ])assing over the dorsum near the 

 cephalic margin of the segments. Along each side on 

 the lateral fold occurs a row of eight irregular black 

 spots, seven of wliich contain each a spiracle. The second, 

 third, fourth, fifth and sixth segments each have on tho 

 A'enter a broad black band similar to those on the dorsum. In the 

 fenuile the eighth and tentli segments constitute the lower and 

 u])]>er plates respectively of the genital apparatus; these are black, 

 and on the dor.<nm at the base of the u])ppr ])]ate is situated the 

 broAxnish anus. The ninth segment c<»nstituting the sheath 

 betw^een the genital plates is brownish. Fig. 6, page 241, shows 

 the position of the anus (a); the apj)eai'ance of the genital appai-a- 

 liis (III upper genitxal plate; (1) lower genital plate; (e) egg-shi-a i li ; 

 and the munber, arrangement and relative size of the black spots 

 on the abdomen of the female as seen from the side; ouly that 

 ]K)rtion of the first segment which beai-s the spiracde is repre- 

 sented. The aibdomen of the male (Fig. 5, page 241) ditfers from 

 that of the female in being .^lightly smaller and lougi^r; the eighth 

 segment is distinct from the genital ai)i)aratus and has a brt)ad 

 black band on its venter in which the seventh spiracle occurs; the 

 trough -shaj)ed ninth segment is black and constitutes the lower 

 plate (Fig. 5, 1) of the genital apparatus; the upper plate (Fig. 5, 

 u) or tenth segmeD.t is narrow and arises xertically at the base of 

 the lower plate; this upper plate is blackiish in color, lighter about 

 the tips where the anus (Fig. 5, a) is situated; the forceps (Fig. 5, 



