36 R. W. CROSSKEY 
slightly or strongly shining. Sublunular bulla flattened and greyish pollinose 
or shining on upper part adjacent to lunula. Epistome weakly or moderately 
prominent . ; 4 
— Scutellum with basal setae and maelons aie genre & ifa oo weak pam bE ae 
present simulating apicals then these situated in a preapical position on disc of 
the scutellum) (Text-fig. 64); scutellar hairing confined to basal half or two thirds 
of scutellar disc, usually the hindmost hairing rather erect and stronger than 
remainder of hairing. Postscutellum very prominent, often narrowed, produced 
backwards and flattened (sometimes medially slightly sulcate), always partly 
visible when fly seen directly from above (Text-fig. 64). dG with some of the 
hairing (sometimes also the setae) of the mesopleuron flattened and lanceolate 
or broadly scale-like, similar flattened vestiture or scales often present also on 
humeral callus or notopleuron [also on wing-bases and femora in some African 
species]. Scutellum with posterior part ashy grey or brownish grey (conspicuously 
contrasting with dark brown or black basal discal part when viewed from behind). 
Sublunular bulla rounded or knob-like and brilliantly shining. Epistome enor- 
mously prominent and the face seen in profile very deeply concave (Text-fig. 28) 
subgenus MORMONOMYIA Brauer & Bergenstamm 
4 Scutellar dorsum evenly convex. Wing with petiole of cell R, at least as long as 
m—cu. Wings of both sexes clear hyaline. Claws of ¢ about equal in length to 
last tarsal segment : . subgenus HYALOMYA Robineau-Desvoidy 
— Scutellum distinctly flattened on pote half and with a rather sharp thin hind 
margin. Wing with petiole of cell R; conspicuously shorter than m—cu. Wings 
of ¢ dark brown anterobasally. iw of g enormous, obviously longer than 
last tarsal segment : ‘ : . Alophora hippobosca (subgenus uncertain) 
Tribe CYLINDROMYIINI 
This almost world-wide group comprises some very distinctive tachinids in which, 
typically, the abdomen is very elongate and subcylindrical and in which palpi 
are often lacking (as in all the Australian members); in addition to these obvious 
features the tribe in the strict sense is characterized by having the coxae of the 
hind legs widely separated from the base of the abdomen by a completely closed 
and strongly sclerotized posteroventral declivity to the thorax (normally in 
Tachinidae the median part of this declivity is membranous). The limits of the 
tribe are not completely clear at present as it 1s uncertain whether a number of 
intermediate forms should be considered as contribal with Cylindromyia Meigen 
ornot. These intermediate forms include, for example, the Oriental genus Curtocera 
Macquart and Hwuttonobesseria Curran from New Zealand in which the posteroventral 
thoracic declivity is closed as in Cylindromyia but in which there are strongly 
developed palpi; such forms interconnect Cylindromyia and its immediate allies 
with Hermya Robineau-Desvoidy, Clava Brauer & Bergenstamm, and like genera 
in which there is a cylindromyiine body facies but in which the posteroventral 
thoracic declivity is membranous medially (forming an ‘open’ bridge) and fully 
developed palpi occur. It is not germane to consider the limits of the Cylindromyiini 
on a world basis at present, but the following characteristics are noted as occurring 
in all the Australian members and most of the extra-Australian members of the 
Cylindromyiini sensu stricto (i.e. exclusive of forms with ‘open’ posteroventral 
thoracic declivity and exclusive of forms possessing palpi). 
