140 QUEENSLAND AGRICULTURAL JOURNAL. [1 Frs., 1902. 
countries, in which also scarabeid larve other than those occurring in Australia, 
although related insects, injure field crops. For example, it might prove 
serviceable in the United States of America in assisting to subjugate the 
different species of Hoplosternus, whose larve provide the root-destroying 
“orub pest” of that region. 
Expranation oF Prate IX. 
[Dielis formosa, Guérin. | 
Fig. 1.—Male insect. 
Fig. 2.—Female insect. 
Fig. 3.—Larva fully developed and detached from victim. 
Fig. 4.—Chrysalis cocoon (female), the silken covering intact. 
Fig. 5.—Chrysalis cocoon (female), the silken covering in two layers partially de- 
tached and discovering the chrysalis proper. : 
Fig. 6.—Chrysalis (male), the silken covering removed. 
Fig. 7.—Nymph (female) removed from chrysalis. 
Fig. 8.—Cocoon (female), natural circumcision of one extremity by perfect insect on 
emergence. 
Fig. cama (male), the silken cocoon detached, illustrating phenomenon shown 
in Fig. 8. 
Fig. 10.—A cane grub (Larva of Lepidiota ulbohirta attacked by Larva (Fig. 3) of 
Parasite (Fig. 2). 
Fig. 11.—A cane grub (Larva of Lepidiota albuhirta) that has succumbed to attack 
of larva of parasite, after having its body contents partially removed by it. 
Norxr.—All the figures are of natural size. Figures Nous. 3, 4, 10, 11, after 
PEeer oe placed at disposal of the writer by the Colonial Sugar Refining Company; 
imited, and reproduced with the permission of its general manager. Figures 1, 2, 7; 
from negatives prepared by Mr. McMillan. chief chemist, Childers Mill (C.S.R. Co.’s, 
Ltd.) Figures 5, 6, 8, 9, from photographs by H. W. Mobsby (Dep. Agr. Qd.) 
Agricultural Patents. 
PATENTS ACCEPTED. : 
WeEEpD-potson InsEcToR.—Classes 28, 81 (2 Figures)—6091: George 
Partridge, of Ruthven street, Soowoomba, plumber. “An Appliance for Inoculat- 
ing Prickly Pear and other Noxious Weeds with Destructive Fluid.” Dated 3rd 
July, 1901. (Drawings, 7s. 6d.; specification, 2s. 6d) Toeconomisetheapplication 
of liquid poison to prickly pear and like weeds, the liquid is carried in a yaly 
vessel (resembling an enlarged machine oil-can) provided with an elongated 
bayonet-like probe on the spout, whereby the liquid is conducted directly into 
the tissue of the plant. (1 claim.) 
TRACK-BURNER For Grass Pappocks.—Classes 36, 83 (7 Figures)— 
5909: Frederick Longley, of No. 337 Little Lonsdale street, Melbourne, 
Victoria, engineer, and Arthur Brundrett, of No. 23 Nicholson street, 
Essendon, Victoria, gardener. ‘A Machine for Burning-off Lines oF 
Strips of Grass.” Dated 25th February, 1901. (Drawings, 12s. 6d.; specifica- 
tion, 8s. 6d.) A rectangular metal firebox with open bottom and 
openings around the roof is dragged along the track to be burned ; through 
openings in the lower point, a row of vaporising burners of the ‘ Primus. 
type ignite the grass; to prevent lateral extension of the fire, the firebox 38 
surrounded by a flexible pavement of articulated drag-plates, which are of special 
form for conveniently varying their extent by adding or detaching rows 0 
plates; the plates are attached by longitudinal drag-chains to a draught-bat, 
and by lateral rings to each other; extra plates and loose chains are added m 
the rear of the free box to ensure complete extinction; a land-wheel may be 
added to operate the air-pump of the lamps by a crank and connecting rod. 
( claims.) 
