1954] Wheeler and Wheeler — BasiceroLini and Dacetini AnL Larvae 127 
subtriangular in anterior view; body curved medially and 
produced inward to form a blade which bears two stout 
teeth on its inner border. Maxillae with the apex para- 
boloidal and directed medially; palp chair-shaped with five 
sensilla (two apical and bearing a minute spinule each, two 
subapical and encapsulated, one lateral and bearing a large 
spinule) ; galea conical with two apical sensilla. Labium 
feebly bilobed, anterior surface with three slight swellings 
(one basal and an anteroventral on each side) ; anterior 
surface densely spinulose, the spinules minute and in short 
transverse rows ; palp similar to maxillary palp but shorter ; 
an isolated sensillum between each palp and the opening 
of the sericteries; the latter a short transverse slit in a 
ventral depression. Hypopharynx spinulose, the spinules 
minute and in moderately long transverse rows. 
Very young larva: Length about 1.4 mm. Subcylindri- 
cal; hairs seemingly more abundant; otherwise very similar 
to the mature larva. 
Material studied: 18 larvae from Victoria (Australia) ; 
courtesy of Dr. W. L. Brown, who believes that the larvae 
feed on Collembola (Brown, 1953b). 
Or'ectognathus mjobergi For el 
Apparently very similar to clarki, except cranium trans- 
versally subelliptical. (Material studied: 5 damaged in- 
teguments from Queensland.) 
Orectognathus satan Brown 
(PI. 8, fig. 3) 
Generally similar to clarki, except in the following 
details : -Head subcordate in anterior view due to a median 
impression of the occipital border. Spinules on the posterior 
surface of the labrum fewer and larger. Mandibles with 
the apical tooth longer and stouter, the blade shorter and 
narrower, medial teeth sharper-pointed. Maxillae with a 
few minute spinules on the apex. Anterior surface of 
labium with only two swellings and with the spinules longer 
but fewer. Hypopharynx with the spinules larger and in 
longer rows. (Material studied: a dozen immature (?) 
larvae from Queensland; courtesy of Dr. W. L. Brown.) 
