THE 



y* 



#■' 



^* 9on %M H 



VOLUME XVIII. 



%/ 



* 



ANNOTATED LIST OF BRITISH ANTEOMYIID.E. 

 BT R. H. MEADE. 



Iu the following paper I shall attempt to give a list of the British 

 species comprised in the great Sub-Family of Muscidce named Atitho- 

 myiidce. This group of flies may be distinguished from the more highly 

 developed or typical Muscidce by the first posterior wing-cell being 

 fully open ; the fourth longitudinal vein running direct to the margin 

 of the wing, without being bent upwards towards the third longitu- 

 dinal vein in a curve or angle as in the Tachinidce and Muscidce. 

 The Antlwmyiidce are separated from the various groups of smaller or 

 acalypterate Muscidce by the alulets or scales being more or less 

 highly developed. 



For the illustration of the characters of some of the genera, and 

 also of distinctive points in new or obscure species, it will be useful 

 to introduce some figures of the wings, and I shall first insert an ex- 

 planatory sketch to enable the student to understand the names of 

 the veins and cells to which reference is made. The terms which I 

 have adopted are the same as those used by Loew in his introductory 

 chapter on the terminology of Diptera, inserted at the beginning of 

 the first part of his Monographs on the Dipt era of North America. 



Eg.1. 



* Fig. 1 — Wing of Hyetodesia lucoruvi. 



A A costal vein ; 1.1. first longitudinal vein, often double, when the second branch is named 

 the auxilliary vein ; 2. second longitudinal vein ; 3.3 third longitudinal vein ; 4.4.4. fourth longi- 

 tudinal vein ; 5.5. fifth longitudinal vein ; 6. sixth longitudinal or anal vein ; 7. axillary vein ; 

 8. internal transverse vein ; 9. external transverse vein; a.a. costal cells; b. marginal cell ; c. 

 submarginal cell ; d. first posterior cell ; e. second posterior cell ; /. third posterior cell ; g. dis- 

 coidal cell ; h.h h basal cells ; X. costal spine, always (when present) at the point of termination 

 of the first branch of the first longitudinal vein. 



In the 11th volume of this Magazine, p. 199, I gave a sketch of 



