279 



Length of gall, 8-11 mm. : diameter of gall, 6-9 mm. ; 

 length of insect, 3-5 mm. : width of insect, 2 mm. 



Habitat. — Marino, South-Eastern District of South Australia. 



The specimen in the collection of the S.A. Museum was pre- 

 sented by Mr. A. Molineux, the genial and zealous Secretary of 

 the Bureau of Agriculture, from the above locality, in March, 

 1885, The numerous galls (54 in all) are distributed over a 

 large, not quite perfect, leaf of one' of the " Stringybark " gums, 

 and arranged in short, more or less irregular, rows of three to 

 five, but not crowded. Tliey resemble the galls of Opisthoscelis 

 in form and the position of the aperture, but the insects differ 

 from those of the latter genus in form of body and entire absence 

 of legs, and from those of A&celis, as limited by Schrader, also in 

 form of body and the absence of the trispinose dorsal appendage. 

 More and fresher material is, however, required for critical 

 examination before a conclusive decision respecting the position 

 of the species can be arrived at. 



EXPLAXATI(3N OF THE ILLUSTRATIONS. 

 Plate III. 



Fig. L Brachyscelk munita, Schrader. Feiuale galls. Nat. size, 

 A , Typical form ; outline of Schrader's figure, 



B. Usual form with narrow contorted appendages. 



C. Var. folio.'^a, var, nov, , with leaf-like appendages. 



D. Var. reducta. Small form on mallee Eucalypts. 



Fig. 2. Brachyscelis oiiroloides, spec. nov. Male and female galls. Nat. 

 size. 



a. Normal form of female galls on twigs ; young and mature 



form. 

 h, h, b. Normal form of male galls in various stages on leaves. 

 f. Male gall on seed vessel. 



d. Dorsal half of female gall, showing form of cavity, 



e, f. Dorsal and ventral view of female, nat, size. 



Fig, 3, Brachyscelis regidaris, spec, nov. Female gall. Natural size. 



Fig, 3a, Abortive form of same, through parasites. 



Fig 4. Brarhy>iceli>i gtabra, spec, nov. Female gall. Natural size. 



Plate IV. 



Fig. 1. BrarhysceliH .subconica, spec. nov. Natural size. 



a. Old, dry female gall, roughened by tubercles. 



h. Living female gall, more than half-grown, showing annuli at 



apex. 

 r, d. Young galls in various stages (contorted), 

 ' c. Solitary ; /, aggregated male galls, 



'J. Parasitised and abortive female gall, affected by Chalcids. 



