CLUNIO. 241 



which run out on the hind margin ; the second being formed by 

 the subanal springing from the pobrachial vein. At other times 

 the first externo-median arises exactly at the end of the prsebra- 

 chial areolet ("interstitial"), or else (as in most with one entire 

 cubital areolet) from the prsebrachial vein, a little before the end 

 of the areolet. I have treated the two strong veins behind the 

 costal as radial and cubital, and the faint vein before them as sub- 

 costal (supposing the mediastinal to be obliterated). But if the 

 faint trace of a forked vein towards the apex of the wing figured 

 by Winnertz in a few, is not (as I suppose) a spurious vein, it 

 would be the cubital, and my cubital would = the true radial, and 

 my radial would = the subcostal, and my subcostal would = the 

 mediastinal."^^. MSS. 



Genus V. CLUNIO. 



CLUNIO, Haliday, Nat. Hist. Review, ii. Proc. 62 (1855). 



" Mas. Proboscis obsoleta. Antenna? 1 1-articulata?, articulis tertio et 

 ultimb elongatis. Ala? alutacese, venis duabus furcatis, transversis 

 nullis. 

 " Male. Proboscis obsolete. Antenna? eleven-jointed ; third and 



eleventh joints elongated. Wings adiaphanous, with two forked veins ; 



no transverse veins. 



" 1. marinus, Hal. Nat. Hist. Rev. ii. Proc. 62. pi. 2. f. 4 (1855). 

 Mas, obscure ferruginous, antennis, alis, halteribus pedibusque sordide 

 albis, thoracis lateribus anticis scutelloque flavescentibus. Long. |- ; 

 alar. 1-f- lin. 



"Male. Dusky ferruginous. Head rounded, inflected to the prsester- 

 num. Mouth obsolete. Eyes rounded; distant above, approximate 

 beneath, the antennae. Antenna?, wings, halteres, and legs dingy white. 

 Antenna? eleven-jointed, shorter than the thorax; the short joints 

 rather dusky ; the basal joints subglobose ; the terminal ovate ; the 

 third and last elongate, this elliptical. Thorax projecting over the 

 head ; scutellum and sides of the thorax before the wings pale yellowish; 

 mesonotum divided by two parallel sutures, with an elevated line down 

 the middle, and a depression before the convex semicircular scutellum ; 

 metathorax very short ; mesosternum gibbous. Wings adiaphanous, 

 naked, except the pubescent margin ; pra?brachial vein bifurcated about 

 the middle, embracing the apex with its branches ; pobrachial forked 

 near the margin, with the hinder branch (or the subanal vein) recurved, 

 ending at the posterior margin ; radial-cubital vein fainter between the 

 prsebrachial and the costa, ending at about the middle of the latter ; 

 anal vein simple. Abdomen dusky, with nacreous gloss, shorter than 

 the thorax, dilated backwards ; the segments linear-transverse. Hypo- 



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