102 LECANIUM B1TUBEECULATUM. 



indicated, are placed immediately behind the former ; 

 the body behind the tubercles usually slopes suddenly 

 downwards to the anal cleft ; median area between the 

 marginal cleft and the tubercles more or less convex, 

 usually with a deep depression radiating from the anal 

 cleft on either side ; margins at the sides with seven or 

 eight equidistant, and more or less irregularly-raised 

 carinaB, the central carina on each side being much the 

 strongest, and usually extending to the large anterior 

 tubercles ; margins of anal cleft raised and prominent. 

 Colour chocolate-brown, chestnut-brown, or rarely 

 greyish-brown or greenish-grey, with a varying 

 number of interrupted, transverse, ivory-white lines or 

 bands, the anterior pair of bands being generally con- 

 tinuous on the dorsum, the rest gradually diminishing 

 in length towards the anal cleft, while, in some ex- 

 amples, the white markings preponderate and partly 

 obscure the ground colour ; margins between the carinae 

 broadly greyish, or greyish-green ; tubercles blackish- 

 crimson or piceous, and there are one or two pairs of 

 blackish spots in front of the tubercles intersecting the 

 white transverse bands, the anterior pair being usually 

 the larger ; these spots are often very slightly raised 

 above the dermis, and, viewed dorsally, appear as minute 

 tubercles. Antenna (figs. 4, 4 a) usually of eight joints, 

 but sometimes of seven, and the comparative length of 

 the joints varies ; formula (3, 5) (4, 6, 7, 8) 2, 1, or 3 

 (4, 5, 6, 7, 8), 2, 1 ; the hairs are rather straight and stiff. 

 Legs (fig. 5) a little longer than the antennas, and slen- 

 der ; digitules to claw broadly dilated, with the extre- 

 mities suddenly truncate, those of the claw ordinary. 

 Anal lobes (figs. 6, 6 a) rounded, with several long hairs 

 the apical portion. Spiracles (figs. 7, 7 a) circular, 

 with inner basal attachment reticulated. Marginal 

 spines (figs. 8, 8 a) simple, rather slender, and pointed. 



Long, 4-6 mm. ; wide, 3-4 mm. ; high, 2-2' 50 mm. 

 Parasitised specimens smaller. 



Female at period of fecundation (fig. 3) elongate- 

 ovate, ends equally rounded ; colour light red or reddish- 



