OBSERVATIONS ON SCALE-INSECTS (COCCIDAE) — III. 



349 



Akermes quinquepori, sp. nov. 



Female, adult. Flattened and shrivelled on the dorsum ; sides somewhat rounded 

 and thickened ; integument presenting a dull, oily appearance ; colour, when dry, 

 dull red-brown, sometimes paler on the dorsum and often with obscure blackish and 

 indefinite markings. Antennae (fig. 4, a) and legs (fig. 4, b) vestigial ; the former 

 with several short spinose hairs at the tip ; basal segment relatively very large ; 

 length less than half the width of the stigmata. Legs (fig. 4, b) about the same 

 size as the antennae ; coxal sclerite relatively large, claw well defined ; above the 

 latter a slender hair, and there are several additional hairs traceable in some of the 



d 



Fig. 4. Akervies quinquepori, Newst., sp. n., $ ; a, rudi- 

 mentary antenna ; b, rudimentary leg ; c, stigmatic area ; 

 d, anal lobes ; e, large compound pore. 



specimens. Stigmatic clefts (fig. 4, c) deep ; at the base a strongly chitinised sclerite 

 which forms a semicylindrical tube ; from this structure to the stigmata is a thin 

 glandular tube ; the whole of this respiratory organ is unusually large. jMargins 

 thickened and finely but irregularly crenulated ; spines exceedingly mmute and 

 in-egularly arranged. Anal cleft short, about one-sixth the entire length of the 

 insect. Anal lobes (fig. 4, d) surrounded by a thickened wall of chitin and beyond 

 it a concentric zone of thmner chitin beset with rather small and somewhat circular 



