Collin — Notes on Specimens of Borhoridw and some Ephydridce. 251 



" This distiuet and beautiful species has occurred but once at Holly- 

 wood among Mentha sylvestris in a ditch. The eyes are large and of aa 

 exquisite purple tint, and the face remarkably small. The eyes are dark- 

 green or brassy in most other species." 



There is a single male labelled "porphyrops" which is identical with a 

 species occurring not uncommonly at Snailwell (Oambs.) at the end of May ; 

 additional characters lie in the yellowish front coxae, the deep black 

 triangular frontal stripes, the dull black patch visible on the upper part 

 of pleurse beneath the notopleural suture when viewed from in front, and tlie 

 presence of a distinct presutural dorso-central bristle on thorax. The tarsi 

 are extensively pale, and the fifth abdominal segment in the male is half as 

 long again as the fourth, and truncate at the tip ; in the female the third 

 antennal joint is dark reddish-brown, and the abdomen broader, with the 

 fourth and fifth segments equal. 



Hydrellia ihoracica Hal. — Original description : — 



" Sp. 5. ihoracica, H. thorace cinereo obsolete lineato, facie alba, 

 palpis nigris, tarsis posterioribus ferrugineis ; ni.f. 1^ lin. 



" On the seacoast, Hollywood ; June ; rare. 



" A very distinct species, of robust form, and the only one vvliicli has 

 any vestige of markings on the body. The middle and hind tibiis are 

 evidently thicker than the fore pair. The discoidal recurrent nerve is 

 very near the margin." 



One female labelled " thoraeica," and three others, represent the species 

 generally recognized under this name. Schiner (Fauna Austr. Dipt, ii, 249) 

 makes a curious mistake in his reference to this species, quoting characters as 

 attributed to it by Haliday, which were really those upon which Haliday 

 founded his species tarsata. 



Hydrellia ranunculi Hal. — Original description : — 



" Sp. 6. Banunculiy'H. nigro-olivacea facie alba, tarsis posterioribus 

 basi palpisque ferrugineis, nervo transverse subobliquo : m.f. IJ lin. 



" Abundant in meadows and marshes. This is probably the variety 

 of S. griseola with a white face, of which Fallen makes mention, but he 

 is mistaken in considering it as a sexual distinction." 



Only a fragment remains of the specimen labelled " ranunculi," but this 

 fragment appears to be identical, owing to the slope of the outer cross-vein 

 with a number of other specimens, one of which (a female) is labelled " incana 

 Stn.," and they all represent a species which is not the ranunculi Jia\. of Loew, 



SCIENT. PKOC. R.D.S., VOL. XIV, NO. XVII. 2 K 



