188 CH10NASPIS ASPIDISTRA. 



Long. 2*50 3 mm. 



Early adult female (PL XX, fig. 4) yellow ; eye- 

 spots black. Mr. Green says the living female insect 

 is of a dull purple-red colour, which I imagine applies 

 to the old adults. Free abdominal segments very 

 distinct, produced and separated at the margins into 

 the form of large projecting tubercles, which in para- 

 sitised individuals (PL XX, fig. 5) are even more 

 pronounced. At gestation the dermis becomes highly 

 chitinised, especially at the margins, which preserves 

 its form; it is then of a pale yellowish red, with 

 orange-brown margins ; with the circumgenital glands 

 and spiracles covered with white secretion. Parasitised 

 specimens also retain their form, but are much more 

 inflated. 



Anterior parastigmatic glands number about twelve, 

 are arranged in small sub-groups; posterior groups, 

 fewer, are placed in a single series. Pygidium (PI. 

 XXII, fig. 2) broad at the base. Circumgenital glands 

 in five large groups. Formula of four examples : 



8978 

 2321 . 2218 . 1718 . 19 !'. 

 1718 . 2321 . 1817 . 1519 



Margin (PI. XXVII, fig. 3) with the median lobes, 

 moderately developed, placed closely together, having 

 their inner lateral margin straight, posterior margin 

 usually trilobed, and sloping off almost to the base 

 of the outer lateral margin. Second and third lobes 

 narrowly separated; the former, the longest, have 

 the posterior margin rounded, and are constricted 

 towards the base. A fourth lobe is sometimes pre- 

 sent, but is very minute and quite rudimentary. The 

 first three projecting pores are very pronounced and 

 pointed, then follow two others which scarcely project ; 

 but at the sixth the margin forms an angular projec- 

 tion. The seven or eight plates are simple and spine - 

 like, and gradually lengthen as they approach the 

 first free segment; the last four are narrowly sepa- 



