OBSERVATIONS ON SCALE-INSECTS (COCCIDAE) — IV. 9 



border ; the other less than half the diameter of the former, with a beaded margin ; 

 the large ones are generally distributed over the dorsum and also form large 

 triangular groups along the margin of the abdomen. Venter with three large 

 vaginal discs or areoles, the laterals (fig. 4, c) reniform, the median one ovate, 

 with a faint central transverse division or construction ; these, if maceration is 

 not carried too far, are seen to be completely covered with opaque black pigment ; 

 when the pigment is partly removed a finely reticulated surface is visible, but when 

 completely removed the reticulation may disappear almost completely. Length 

 of macerated specimens, 5-6 mm. ; width, 2 50-3 mm. 



Larva. Very elongate. Gland pores or spinnerets as in the adult ; arranged 

 in regular transverse rows, the larger ones preponderating, the smaller ones 

 confined chiefly to the median line. Terminal segment of the antennae with three 

 long hairs, the longest being one-fourth longer than the antennae ; the remaining 

 hairs are also very long, but less than half the length of the longest. Marginal 



Fig. 4. 



leery a nigroareolata, Newst., sp. n., $. ; a. tarsus ; 

 b, gland pores ; c, lateral areole, with portion of pigmented surface. 



hairs very long, the longest of the abdominal ones nearly as long as the antennae ; 

 the long caudal hairs six in number, three on either side of the anal orifice ; two 

 are very long, being almost as long as the body, the third a little more than half 

 the length of the others. Length, 0*9-1 mm. Length of antennae, 04 mm. 



Uganda: Kampala, on coffee, 4.xi.l3 (C. C. Gowdey) ; Jinja, on croton, 

 1914 (Dr. R. Van Someren). 



Icerya sulfurea var. pattersoni, nov. 



Female, adult. Waxy covering bright pale yellow ; covering of the dorsum 

 imperfect, but that which remains is suggestive of short stout plates ; marginal 

 series of waxen appendages long, broad, curved downwards and slightly curled 

 distally. Ovisac well defined ; colour, white or white with a faint tinge of yellow. 

 Derm faintly hirsute, but thickly studded with minute hairs interspersed with 

 long slender ones. Margins with irregular groups of long outstanding hairs, the 



