68 SCIENCE BULLETIN. N... IS. 



saiue (occids under different surroiuKlincs, or wheu upon lhe a>i's of tIk^ 

 branchlet.s of tlie Camariva it h(>con\es wedge-sliaped, as in the ty])ical E. 

 mancus and It. tyipartitys. wlu-n upop the side of the branchlet it is more a 

 convex wrinkled coccid as in tlic ty|)ical /?. casuarincp. I can find both 

 forms of adult female coccid in the examination of a large series of fresh 

 species of B. mmicua, but the wedge-shaped form is the commoji one in the 

 Casiiariva. The coloi'ation is also variable in a large series. 



273. Rinzococriis tiip<nii(ns. Cat. Coccida-, ]). 67. 



Rli'nncoccus ciridif;, Green (Fig. 4:9). 

 Pro. Linn. Soc. \. S. Wales, vol. xxv, p. .559, pi. xxxvii, tigs. 1-3. liKtO. 

 Froggatt, Agric. Gazette X. S. Wales, vol. vii, j). 2<». liK>2. 



The tvpe specimens were found scattered over the young foliage and twigs 

 of the Black Wattle {Acacia decurrens) growing at Mittagong, New Scnith 

 Wales. Mr. T. McCarthy has since collected it upon Acacia proniivev.^ at 

 Lakemba, near Sydney. I noted it in my list of " Insects of the \\'attle 

 Trees." 



Adult female when alive deep green, changing at death to a tlull purplish 

 brown with a little white meal on the dorsal surface. Length about J- of an 

 inch. Elongate oval, very convex, tapering slightly to the anal segment: 

 concave beneath, with the margins curved in when attached to a twig. 

 Antenna' six-jointed, basal one short, broad, somewhat angular, last one 

 longer than the fourth and fifth combined, with the extremity round and with 

 a few scattered hairs. Legs short stout, tarsus nearly as long as tibia. Bigi- 

 tules fine hairs (according to Green), but in my specimens the tips seem to be 

 curled round and slightly thickened. Anal ring with six hairs. The outer 

 margin of the last two abdominal segments on either side of the anal tubercles 

 rounded and furnished with stout spiny hairs; the anal lobes rounded, jjro- 

 jecting, chitinous, dull yellow with short stiff spiny hairs. Epidermis with 

 numv fine circular pores and long sharp spines. 



274. Rhizococois riridls. Cat. Cocciche, ]). 66. 



