28 



SCIENCE BULLETIN, No. 19. 



without any very regular structure. Female bright red, smooth, shining. 

 Length, 1| lines. Of the usual turbinate form, with the cephalic fold falling 

 over in front, and rounded like some of the Brachyscelid coccids. Dorsal 

 surface smooth, anal extremity short and broad, terminating with a ring of 

 fan-shaped hairs. 



610. Tachardia australis. Cat. Coccidse, p. 123. 



Tachardia convexa, Fuller. 

 Trans. Entom. Soc, London, p. 457, 1899. 

 This species comes from Western Australia, where Fuller found it upon a 

 species of Hypocalymma. The test is dark brown, very convex, smooth, 

 with two lateral filaments protruding from circular orifices. Length, 0-15 

 inch. Adult female elongate, thoracic tubes well developed, chitinous ring 

 at apex of abdomen, with ten hairs ; dorsal spine distinct, with several hairs. 

 Anterior spiracles large, surrounded with small pores. 



611. Tachardia convexa. Cat. Coccidae, p. 123. 



Tachardia decorella, Maskell (Fig. 18). 



Tram. Neiv Zealand Institute, vol. xxv, p. 247, 1892, and vol. xxvii, p. 70, 1894. 



vol. xxviii, p. 408, 1896. 

 Barlow, Indian, Museum Notes, vol. iv, p. 58, 1896, pi. v. 

 Froggatt, Agric. Gazette, N.S.W., vol. x, p. 1162, pi. o, 1899. 



This, a very typical Australian form, with a very wide range from South 



Australia to Queensland, and is found upon a number of different native 



shrubs and trees in New South 



Wales, such as Monotoca elliptica, 



Eugenia smithi, Myrica ceri- 



fera, &c., about the vicinity of 



Sydney, and on the west upon 



the desert cypress {Frenella 



robusta). In Queensland it has 



been recorded upon orchard 



trees. 



Though considered an Aus- 

 tralian coccid, it is rather 

 remarkable that it has been dis- 

 covered in India, infesting the 

 tea plant and forest trees. 



The covering of the adult 

 female is remarkable for its 

 regular form, the central por- 

 tion or larval test "being regu- 

 larly surrounded with ridges of 

 brownish yellow resin, forming a 



Fig. IS.— Tachardia decorella. 



