1881. 27 



Description of ? and sub-imago deferred. 



Long, corp., <J , 11, ? , 13 ; al, <J , 12, ? , 15 3 set., <J , 28—29, sub-im., 17, ? , 

 22—26, sub-im., 19 mm. 



Hah. : in a mill stream at Tarascon (Ariege). August and 

 September. 



My introductory caution against laying too much stress upon the 

 admeasurements given in the descriptions of the genera should not 

 be lost sight of. Accidents in early life, to which the legs and setae 

 are very liable, interfere with the dimensions in the adult insect ; and 

 some allowance must be made for exceptional peculiarities in the fore 

 tarsus of the ^ of certain species, all of which are not indicated here. 

 The hind tarsus is less liable to variation. 



Croydon : April, 1881. 



ANNOTATED LIST OF BKITISH ANTHOMYIID&. 



BY E. H. MEADE. 



{Continued from page 5). 



3. MTD^A, E. Desv. 



Spilogaster, pt., Auctt. 

 Aricia, pt., Macq. 

 Qen. ch. — Eyes bare, contiguous, or sub-contiguous in male ; 

 arista plumose ; abdomen mostly oval, and always unspotted ; alulets 

 well developed, the under scale being much longer than the upper one ; 

 anal vein not prolonged to the margin of the wing. 



With legs wholly black. 



1. YESPERTLNA, Fall. 3. ALLOTALLA, Meig. 



2. NIGRITELLA, Zett. 



With legs partly pale. 



4. u kb ax a, Meig. 



5. ANGELICA, Scop. 



6. TINCTA, Zett. 



7. pagaisa, Fab. 



8. nigricolor, Fall. 



9. impuncta, Fall. 



indistinct a, Bond. 



10. separata, Meig. 



11. FLAYEOLA, Fall. 



varians, Zett. 



The species placed in this group form part of the genus Spilo 

 gaster of most authors, but differ from those properly belonging to 

 that genus by having unspotted bodies. The genus Mydcea is closel; 

 related to Hydrophoria, but may be distinguished from it by the specie 

 having the abdomen usually oval and not conical, and not having th ; 

 anal vein prolonged to the posterior margin of the wing. 



M. NIGRITELLA, Zett. 

 This little black and rather rare species bears a very considerable resemblan< 



