260 MUSCID.E. 



Subgenus 1. HYDRINA. 



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

 p., Meig. 



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

 parum dilatati. Antenna mediocres ; articulo tertio subdefiexo, oblongo, 

 dor 'so subimpresso. Arista pubescens aut dor so pectinata. Vena dis- 

 cali-recurrens ab alts margine distans. Abdomen 5-annulatum, con- 

 vexum, apice glabrum. 



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

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

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

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

 men with five 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 subtus pedibusque testaceis, thorace fusco utrinque linea 

 alba, scutello aterrimo. Variat femoribus nigris, aut pedibus nigris, 

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



Antennae beneath and legs testaceous. Thorax brown, with a white 

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

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



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



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

 Meig. ; Hal. ; Zett. Antennis pedibusque fiavis, thorace cinereo, alis 

 seriatim fusco-punctatis, venis transversisfuscis. Long, f; alar. H lin. 



Antenna and legs yellow. Thorax grey. Wings with rows of brown 

 dots ; transverse veins brown. 

 In sandy places. (E. I.) 



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

 antennis pedibusque fiavis, thorace cinereo, venis transversisfuscis. Long, 

 f; alar. 1^ lin. 



Face, antennae, and 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 fiavis, thorace cinereo fusco-vittato, alarum venis transversis 

 et puncto fuscis. Long. ^-; alar. 1|- lin. 



Face, antenna, and legs yellow. Thorax grey, with brown stripes. 

 Wings with brown transverse veins and a brown dot. 

 Common in meadows. (E. I.) 



