464 NOTES ON AUSTRALIAN COCCID.E, No. i., 



period there are transverse furrows marking the abdominal seg- 

 ments; but in older examples these are frequently obscured. At 

 the posterior extremity the terminal segment projects slightly 

 and is more densely chitinous, and roughened by small irregular 

 prominences. It bears on its dorsal surface the anal ring, from 

 which spring 6 stout hairs (fig. 2). Antenna (fig. 3) minute and 

 atrophied, consisting of two irregular joints, the basal one incom- 

 plete; terminal joint with a few stout hairs. Legs entirely 

 wanting. Spiracles (in macerated examples) large and con- 

 spicuous. The whole surface of the body thicklj^ bestrewn with 

 circular spinnerets, some of which give rise to small incon- 

 spicuous hairs. Long, 2 to 3-50 mm.; broad, 1-75 to 2-75 mm. 



Young larva (fig. 4) with well developed legs and antennae. 

 Anal lobes minute, each bearing a stout seta. A transverse 

 series of circular spinnerets on each segment, — about 14, of which 

 8 are dorsal and 6 ventral. Similar transverse series of bristles, 

 alternating with the spinnerets. Antenna 6-jointed; 6th as long 

 as or longer than the previous three together. Tarsus about 

 equal to tibia. Anal ring with 6 hairs. Long, 0-65 mm. 



Hah.— On "Nut-grass" {Cyperus rotundus)^ almost subterra- 

 nean, clustered amongst the bulbous bases of the stems. Said to 

 be destroying this plant " over a large tract of country on the 

 Hunter River Flats, Australia." As the nut-grass is an objection- 

 able weed, this Coccid may be classed amongst the few beneficial 

 species. 



Antonina australis bears a strong superficial resemblance to 

 Chcetococcus graminis of Maskell, but differs {fide that author's 

 description) in the following particulars : — In the presence of 

 onl}^ 6 (instead of 8) hairs on the anal ring ; and in the terminal 

 segment of the abdomen being prominent and tuberculate. It 

 differs from Aiit. jmrjjurea, Sign., in the greater number and 

 prominence of the circular spinnerets, and in the tuberculate 

 character of the terminal segment. From A. socialis, Newst., it 

 may be distinguished by the same difference in dermal characters 

 and in its much smaller .size. A. nortoni, Parrott and CklL, differs 

 in having the antennse distinctly 3-jointed. A. crawi, Ckll., has 



