OBSERVATIONS ON SCALE-INSECTS (COCCIDAE) — IV. 



13 



J 



glands from which the tuft of silky filaments arise are not traceable. Length, 

 inclusive of the anal tuft of filaments, 4*5 mm. ; exclusive of the filaments, 2*5 mm. 



Algeria : El Kantora, 13.iv.13, 1 £, 2<$<S (P. A. Buxton). 



Mr. E. E. Green, to whom I forwarded the above description and drawings, con- 

 siders that " this Margarodes is undoubtedly a new species. In its hairy integument 

 it approaches my M. niger, but that species has limbs of a very different form." 



Stictococcus gowdeyi, Newst. 



Southern Nigeria : Agege ; on young shoots of cacao, invariably protected by 

 the ant Oecophylla, 1915 (Dr. W. A. Lamborn). 



These examples differ from the type lot of specimens by being of a rich dark 

 translucent crimson or of a translucent olivaceous yellow, sometimes with a trace 

 of crimson. They are, in all probability, young adults which had not acquired the 

 permanent colour of more mature examples. 



Stictococcus intermedius sp. nov. 



Female, adult. General facies as in L. sjostedti, Ckll. Pseudo-margin with a regular 

 series of short, deep, sharply defined and slightly radial grooves, giving the extreme 

 edge a finely crenulated appearance, as if marked by a roulette ; midway between 



Fig. 8. Stictococcus intermedius, Newst., sp. n. ; 



marginal spines of : a, adult $ ; b, second stage 



$ ; c, larva at period of ecdysis. 



the median line and the roulette border is an irregular row of deep, clearly defined 

 pits — seven to eight on either side. Colour pale to dark castaneous or piceous, with 

 the integument polished. Marginal spines (fig. 8, a) of two distinct forms : 

 (1) broad and irregularly digitate, and (2) very long, somewhat contorted, broad and 



