412 DIPTERA OF AUSTRALIA. 



5. — Antennse rather more than half the length of entire body ; 

 the apical half of eleventh flagellar joint and the three terminal 

 joints entirely white or pale yellowish. Lamellpe of ovipositor 

 oval. Clouding over the base of the fork larger and usually more 

 distinct than in ^, extending below the fork ; also an indistinct 

 pale clouding in the anal angle of wing. 



Hab. — Sydney, and Hogan's Brush, Narara Creek, near Gos- 

 ford, N.S.W. (Skuse). Five specimens in August. 



Obs. — This species seems to differ from the type of the genus, 

 and resembles Z. toxoneura, O.-Sack., in not having the joints of 

 the antennse verticillate, and having the pedicels short. The 

 white-tipped antennae of the ^j i^ constant, afford a striking 

 character. 



EXPLANATION OF PLATE. 



Fig. 1-la. Galls formed by Cecidomyia acacice-longifolice on flower-stalks of 

 Acacia longifolia ; lb, pupa of C. acacice-longijolioe. 



Fig. 2. Galls formed by Diplosis freneloe on branchlets of the Desert pine, 

 Frenela Endlicheri. 



Fig. 3. Blisters formed by Diplosis parilis on the leaves of Exicalyptus 

 corymbosa. 



Fig. 4. Woody swellings formed by Diplosis Eucalypti on stems of 

 Eucalyptus haemastoma. 



Fig. 5. Galls formed by Hormomyia omalanthi on the mid-rib on underside 

 of leaves and in dense masses around the stems of Omalanthus 

 populifolius. 



Fig. 6. Malformed, coalescent leaf-stalks formed by Lasioptera miscella on 

 Eucalyptus hcemastoma. 



