186 DOLICHOPID.E. 



of the colour appearing more evidently thickened after the junction 

 of the subcostal. JIaUeres imle yellow. Abdomen dark hrmsy-green, 

 with blackish pubescence above. Lamella rounded at the tip. Legs 

 dai'k brassy-green, tarsi black ; fore coxEe yellowish ash-colour, with a 

 few bristles at the tip ; the pubescence on the underside of the femora 

 and fore metatarsus, and at the tip of the hind tibia, yellowish ; fore 

 femora pectinated beneath from the base to the middle, and in front of 

 this beset with shorter spines, continued in a single row to the tip ; 

 tibia with the sharp inner edge thickly beset with short spines in a 

 single row, only the last one at the tip doubled ; fore tarsus scarcely 

 longer than the tibia. 



Common on pools, particularly in the neighbourliood of the 

 sea. (E. S. I.) 



8. prsecox, Lhm. ! act. acad. dec. 2. xii. 243 (1824). — viridis,Mg. 

 — oceanus, Mq. Pallide virescens,fronte thoraceqne supra olivaceis, ab- 

 domine cano-jmbescente, halteribus pallidis, hypostomate Candida. Long. 

 1^ ; alar. 5 lin. 



Hoary greenish, with little metallic lustre. Front blackish. Face 

 glossy white ; beard white ; cheeks expanded less than in the preceding. 

 Arista very short, black, the outer half of the last joint attenuated, 

 paler, the tip capillaceous. Thorax above olive. Wings hyaUne ; veins 

 dusky, the costal and subcostal ferruginous. Halteres pale yellow. 

 Fiibescence of the abdomen and legs pale, except that on the upper side 

 of the femora. Lamella small. Fore legs not so short as in the pre- 

 ceding ; the tarsus much longer than the tibia ; coxas unarmed ; femora 

 bipectinated ; the inside of the tibia, except at the base, with a single 

 row (close set) of minute spines, the last one slender. 



Abundant on the shallow pools left on tlie sandy shores of 

 Lough Neagh, in the summer. (I.) 



9. litoreus, Ztt. d. s. 3051 (1849); ^\u. ^.—aquaticus, Mg.? 

 Obscure viridis subtns canus, fronte thoracecpie siipra olivaceis, hyposto' 

 mate candido, halteribus apice fuscis ; Mas. femoribns anticis sub apice 

 spinuUs iernis compressis luteis. Long. 1^ ; alar. 4 lin. 



Bark bluish-green, beneath hoary. Front blackish. Face silvery- 

 ichite, rather narrow above. Arista short, blackish, the very tip alone 

 capillaceous. Thorax olive in front, brassy-green behind. Wings hya- 

 line ; veins blackish. Halteres pale, with a dusky spot at the tip. Ab- 

 domen with blackish pubescence above. Legs blackish-green. Fore 

 pair moderately long ; coxse unarmed, with pale pubescence ; femora 

 pectinated beneath in the first half, and armed loith three obtuse com- 

 pressed yellowish spines towards the tip, in the male ; tibia inside pec- 

 tinated with short and fine spines, which are scarcely distinguishable 

 in its upper half; tarsus scarcely longer than the tibia. 



Rare. (E.I.) 



10. insequalipes, Ztt. d. s. 444. 4 (1843). — prcecox, Mg. — lito- 



