PLATE III. 



Family XX. EMPID.E. 



Genus 1. Cmpis. Fig. 1. Empis Uvida. 1 a, head with antennre 

 and parts of proboscis extended ; 1 b, antenna ; 1 c, extremity of 

 tarsus ; 1 d, antenna of Euijns horealis. 



Genus 2. Hilara. Fig. 2 a, head of ITilara clllpes, sideways ; 

 2 h, tarsus of fore leg of male. 



Genus 3. Ragas. Fig. 8. Ragm unica. 3 a, head, sideways; 3 b, 

 antenna ; 3 c*, proboscis of female, from side ; 3 6?*, ditto, en- 

 larged ; 3 e*, ditto, from above; 3/, labrum; 3 ^*, one of the 

 palpi ; 3 h*, outline of head of male, from below, with small pro- 

 boscis ; 3 i*, proboscis of ditto, with palpi in situ and detached. 



Genus 4. Brachystoma. Fig. 4 a, head of Brachy stoma hngicornis, 

 sideways; 4 b, antenna. 



Genus 5. Ardoptera. Fig. 5. Ardoptera irrorata. 5 a, head, side- 

 ways ; 5 b, antenna. 



Genus 6. Meleodromia. Fig. 6. Heleodromia stagnalis. 6 a, 

 antenna ; 6 i*, proboscis with one palpus, the latter seen ob- 

 liquely and somewhat narrowed ; 6 c*, labrum ; 6 </*, labrum 

 with one palpus ; 6 e*, tongue, with portion of epistoma ad- 

 hering (comp. TFiedemannia, fig. 7 d) ; 6/*, base of wing of a 

 specimen Avith a supernimierary transverse vein marked with a 

 small * (a circumstance not very rare), to illustrate the wing of 

 Clinocera, Meig. 



Genus 7. Wiedeznannia. Fig. 7. Wiedematmia lota (a specimen 

 with a minute triangular cell in the disc of each wing). 7 a*, 

 head ; 7 b*, ditto, sideways ; 7 c*, proboscis, with the tongue 

 and one palpus removed ; 7 d*, the lingua, with the base ab- 

 ruptly enlarged, forming a large blunt tooth on each side (comp. 

 Dolichopns) ; 7 e*, labrum, with membranous edge, notched at 

 the tip ; 7 /, antenna ; 7 g, extremity of tarsus seen obliquely. 



J. O. W. 



* The figures of the generic details iu this aad subsequeat plates, iudicatcJ by 

 a *, arc engraved from drawings communicated by A. II. Ilaliday, Esq. 



