Collin — Notes on Specimens of Bor-horidce and some Ephydridce. 253 



The male specimen labelled " tarsata " is closely allied to ranunculi Hal., 

 having strong legs, three pairs of dorso-central bristles, and a somewhat 

 oblique cross-vein, but the third autennal joint is dark, the facial bristles still 

 longer, and the reddish ventral plate of genitalia very differently shaped, 

 resembling somewhat that figured by Steuhammer for plitmosa. I associate 

 with it two females in Haliday's Collection, and consider it identical with a 

 male in my collection taken by Col. Terbury at Nairn (Scotland), on 

 July 2nd, 1904, though in that specimen the pulvilli are not reddish. 



MydrelUa cochkarice Hal. — Original description: — 



" Sp. 12. Cochlearioe, H. nigro-aeneseeus facie flavicante, palpis nigris 

 alls obscuris, halteribus basi nigris ; /. 1 lin. 



" Very like the last,' but I am inclined to consider it a distinct species. 

 " Hollywood ; June ; rare." 

 Nothing but a leg and one wing is left of the specimen labelled 

 " cochlearise," with an additional label " P. nigr " (probably meaning palpis 

 niyris) ; but there are three other specimens with a label " P. nigr," which 

 almost certainly represent the same species, and they are the H. nigripesZett. 

 of Becker, who mentions the darkened palpi, though Zetterstedt in his 

 original description wrote " palpi flavi." 



Two specimens labelled " erythrostoma " in Haliday's Collection are 

 males of the above {nigripes Zett.), and have reddish-brown palpi, described 

 by Haliday as " fulvis." 



Hydrellia albilabris Meig. — Five specimens of this pretty little species, 

 with velvety black frons and silvery white face. 



The synonymy of Haliday's species of Hydrellia would appear at preseut 

 to be as follows : — 



CARDAMINES Hal. 



flavilabris Stenh. 

 LATiCEPS Stenh. 



cardaniines Hal. p.p. (var. major). 

 ? aurifacies E. Desv. 

 ?flaviceps Meig. 



HYDROCOTYLES Hal. 



flaviceps Hal. (? nee Mg.). 

 discolor Steuh. 

 ? obscura Mg. 



' erythrostoma Meig {= flavicornis S lenh. = niyripM Zett., according to Haliday in Walker's Ins. 

 Brit. Dipt., iii, 345.) 



