34 THE DIPTRBA-BRA.CHYCRBA OF TASMANMA, 



the antennae. Palpi small, differing in shape in eacb 

 species, but usually somewhat spoon-shaped, with a long 

 handle, and shaq>ly angulated about, the middle, the two 

 joints being usually bent at almost right angles to one 

 another. Antennae either about the same length or shorter 

 than the head ; the first joint about three times the 

 length of the second, the third expanded and about the 

 length of the first and second together, usually termi- 

 nated by a minute pointed style. Eyes separated in both 

 sexes. Thorax considerably longer than broad. Abdo- 

 men long or short, the colouring always black with white 

 markings; male genitalia differing much in size in the 

 different species. Legs rather short. Wings small and 

 narrow, either hyaline or with indistinct blackish cloud- 

 ing; fourth posterior cell always closed. 



Table of the Tasmanian Species of Lonchorhynchus. 



1. Tibiae largely orange; abdomen short. 



Segnis, Sp. now 

 Tibiae black or brown; abdomen long. 2" 



2. Femora entirely black; wings without a stigma. 



Nitidifrons, Macq. 

 Femora black above, red beneath ; wings with a 

 conspicuous black stigma. Actuosus, Sp. nov. 



Lonchorhynchus nitidifrons, Macq. (Figs. 18 and 19). 



Syn. Anabarrhynchus nitidifrons, Macq. 



Proboscis extending beyond the antennae; eves narrowly 

 Separated in male, widely in female; thorax brownish- 

 black, with a broad velvet-black median stripe; abdomen 

 long, black, with hindmargins of the second, third, and 

 fourth segments white, the white colour showing no signs 

 of interruption in the centre; femora black ; tibiae brown ; 

 wings without any distinct stigma, hyaline in the male. 

 very faintly clouded with black in tbe female. 



Length. Male and female, 10 mm. 



Hab. Bagdad Valley, Wedge Bay. 



Fig. 19. Head of Lonckorhynchus nitidifrons. 

 Male. Face black. Proboscis large and thick, pro- 

 jecting straight forwards, and extending beyond the tips 



