158 CATALOGUE OP DIPTERA 



B. clavipes. 



Is abundant in the autumn throughout Ireland. All the 

 females I have taken have the legs more or less red or pale ; 

 a character unnoticed by Meigen. 



Cyrtoma. 



This genus should come next to Ocydromia, from which it differs 

 little in the trophi, &c. 



Cyrtoma melaena. Nigra, alls hyalinisy tibiis posticis graci- 

 libus. 



Size of C. atra and nigra : the hind shanks longer than in either, 



and very slender : the wings whitish hyaline ? . 



Rare about Holy wood. 

 Trichina clavipes. 



Rare about Holywood ; common in Wicklow. 



T. elongata. Gracilis, nigra, nitida, pedibus fuscis. 



Half the size of T. clavipes, but as long, the abdomen of the female 

 being very much produced and pointed : legs slender : in the male 

 the hind shanks are somewhat clavate : in the female the fore 

 thighs are pale, as well as the base of the others and of the shanks : 

 vidngs vnth a light brown stigma : thorax of the male bronzed. 

 Rare ; generally on larches. 



Hilara matrona. Nigricans ; alisfumatis, halteribus etfemo- 

 ribus luteis, metatarso antico maris dilatato elliptico, mar- 

 gine ciliato. (Long. .22 ; dilat. .53.) 



Larger than H. cilipes : fore legs of similar structure: coxae, thighs, 

 and half of fore shanks, as well as the base of the rest, dirty 

 yellow : wings with an oblong costal spot of deeper colour. 

 Taken beside a mountain torrent, flowing to the upper lake 



of the Churches. 



Hemerodromia. 

 A: Alts nervo transversa apicis : seta antennarum brevissima. 



H. melanocephala. Flava : antennis palpisque concoloribus, 

 capite griseo, abdominis dorso fusco, alis immaculatis, 

 nervis disci transversis tribus. (Long. .15.) 



Empis melanocephala. Fabr. E. S. 



The size of H. monostigma : the wings as in it, except that the second 

 nervure is not rounded at its termination, and does not include any 



