OBSERVATIONS ON SCALE-INSECTS (COCCIDAE)— III. 



365 



secretion sometimes present in examples under cover of the ants tents W hen 

 overcrowded the form is irregular, and the anal lobes are so arranged that they 

 appear to be placed near the middle of the back, as in Stictococcus, but this is largely 

 an artifact produced by the tilting of the posterior margin or by the pressure of an 

 adjacent female. Antennae (fig. 16, a) and legs sub-rudimentary ; the former not 

 Qu te so long as the anal lobes, composed of six segments, the articulations being ^ ery 

 clearly defined. Anal cleft partly fused. Anal lobes (fig. 16, b) very thick, rounded, 

 and somewhat crescentic in outline, the pair together resembling the stumpy jaws 



t^^ 



Flo-. 16. Lecanium scutatum, Newst., sp. n., $ ; 

 a,°antenna ; b, anal lobes ; c, gland pores ; 

 d, leg ; €, stigmatic and marginal spines ; 

 /, antenna of larva. ^ 



of a pincers. Derm densely chitinised, and crowded with cells (fig. 16, c), which are 

 irregularly ovate or elliptical, having a more or less concentric ring o darker ctiitin 

 and a central, subcentral or submarginal pore. Between the cells, m places, is a faint 

 line which, when well defined, gives a polygonal reticulation. 



Length, averaging 2 4 mm. i,- u • 



FemiU, seco7id skige. Covered with a thin, vesicuhr and opaque glassy test, which ^a 



easily deciduous. Form short, ovate, flat ; dorsum with a median ridge, from which 



radiate irregular rugose ridges. Antennae and legs as in the adult the legs (fig. lb, d) 



of about the same length as the antennae, all the segments clearly defined ; tarsus 



