200 MUSCID.E. 



Subgenus 1. HYDRINA. 



HYDRINA, Desv. E. M. (1830). Notiphila p., Fal. ; Zett. Ephydra 

 p., Meig. 



Fades proclivis, subtriangularis, convexa, lateribus subtiliter ciliata. Palpi 

 par um dilatati. Antennae mediocres ; articulo tertio subdejlexo, oblongo y 

 dorso subimpresso. Arista pubescens aid dorso pectinata. Vena dis- 

 cali-recurrens ab alee margine distans. Abdomen %-annulatum, con- 

 vexum, apice glabrnm. 



Face slanting, almost triangular, convex, finely ciliated on each side. 

 Palpi hardly dilated. Antenna of moderate size; third joint slightly 

 dejiexed, oblong, a little impressed above. Arista pubescent, or pectinated 

 above. Discal-recurrent vein remote from the border of the icing. Abdo- 

 men icithjive segments, convex, smooth at the tip. 



The species may be divided into two sections : 

 a. Arista with long hairs, or pectinated on the back. Species 1. 

 a a. Arista pubescent. Species 2-7. 



1. picta, Fal. Act. Holm. 1813. 254. 11. 13 (1813) ; Meig. ; Hal. ; 

 Zett. Antennis snbtus pedibusque testaceis, thorace fusco utrinque linea 

 alba, scntello aterrimo. Variat femoribus nigris, ant pedibus nigris, 

 tarsis basi rufescentibus. Long. \\ alar. 1 lin. 



Antenna; beneath and legs testaceous. Thorax drown, with a white 

 stripe on each side. Scutellnm deep black. Var. /3. Femora black. 

 Var. y. Legs black ; tarsi rufescent at the base. 



Common on grass iu shady places. (E. I.) 



2. punctato-nervosa, Fal. Act. Holm. 1813. 254. 12. 14 (1813); 

 Meig. ; Hal. ; Zett. Anlennis pedibusque Jlavis, thorace cinereo, alls 

 seriatim fusco-punctatis, venis transversis fuscis. Long, f; alar. 1| lin. 



AntenncR and legs yellow. Thorax grey. Wings with rotes of brown 



dots ; transverse veins broicn. 

 In sandy places. (E. I.) 



3. flavipes, Fal. Hydr. 12. 15 (1813) ; Meig. ; Hal. ; Zett. Facie 

 antenni* peel iljusque Jlavis, thorace cinereo, venis transversis fuscis. Long. 

 f ; alar. 1 \ lin. 



Face, auU'iince, aud legs yellow. Thorax grey. Transverse veins brown. 

 Not rare in meadows. (E. I.) 



4. stictica, Meig. Zw. vi. 121 (1830); Mcq. ; Hal. Facie anten- 

 nis pedibusque Jlavis, thorace cinereo^fusco-vittalo, alarum venis transversis 

 (I pujicto fuscis. Long, f ; alar. 1^ lin. 



Face, a/tle/nitf, and legs yellow. Thorax grey, with brown stripes. 

 ft i.Hys with brown transverse veins and a brown dot. 

 Common in meadows. (E. I.) 



