128 QUEENSLAND TABANID FLFES 



a large larva collected on December 7th, a fly emerged 

 on January 19th, 1920. On 4th January, 1920, a number 

 of larvae were taken in muddy sand at the edge of the 

 Burnett River at the Euroka crossing ; some of the 

 smaller were preserved, whilst from the larger, after 

 pupation, flies emerged on 17th February. 



In no case were the jars disturbed after the larvae were 

 placed in them, consequently the date of pupation was 

 not ascertained, but as the larvae appeared to })e full-grown 

 when collected, the pupation period during summer was 

 between four and six weeks, probably less in some cases. 

 It was noticed in all cases o]>served by us that when 

 the imago was about to emerge, the jDupa had worked its 

 waj^ up to the surface of the mud, so that, after emergence 

 of the i\y, the empty pupa case was seen projecting for 

 about half its length. 



Larva (fig. 1). The general colour is whitish, with 

 narrow bands of light smoky grey on each segment dorsally. 

 The skin is smooth except for the presence of very fine 

 longitudinal striations. Each segment from the fourth 

 to the tenth bears six fleshy tubercles. The largest larvae 

 (killed in hot water and preserved in formahn), measured 

 30 mm. in length, and 3 mm. in maximum breadth. 



Puparium (figs. 2 and 3). The puparium is pale 

 greyish, measuring 17 to 18 mm. long and 3 mm. broad. 

 Each segment is pro\dded posteriorly with a ring of long 

 stiff hairs. On the eighth abdominal segment are three 

 pairs of spines whose arrangement is shown in fig. 3. 



The male and female fhes which emerged were 

 examined by Dr. Ferguson, who reported that the specimens 

 agreed rather closely with the description of T. j^oUif^nnis 

 Macquart, and that though certain small differences were 

 noticeable, he preferred at present to regard them as 

 belonging to that species rather than describe them as 

 representatives of a new species. 



Tabanths hatclielori Taylor. 

 (Text-figures 4 to 6). 

 Three large black and white larvae found in muddy 

 sand at the edge of the Burnett River on December 7th, 

 1919, were allowed to pupate. One pupa died, a male 



