148 LIST OF DIPTERA. 



Genus 5. DICHELACERA. 



Facies convexa. Proboscis brevis, gracilis. Palpi fere cylin- 

 drici. Antennae 7-articulatae, articulo 3o cornuto. Alae saepissime 

 vittatae. 



Dichelacera, Macq. 

 Chrysops, p., Fabr. 

 Tabanus, p., Wied. 



Costal vein ending at the tip of the wing. Mediastinal ending 

 at before two-thirds of the length. Subcostal ending at nearly 

 three-fourths of the length. Radial ending at much beyond half 

 the distance between the subcostal and the tip of the wing. First 

 branch of the cubital simple, curved, ending at half the distance 

 between the radial and the tip of the wing, forming a rounded angle 

 near its base ; second branch ending on the hind border far from the 

 tip of the wing. Four complete externo-medial veins. Subanal 

 vein united to the anal very near the border. Discal areolet hexa- 

 gonal, much elongated. 



North America. 



1. Dichelacera ferrugata. 



Glaucus ; thoracis limbus ferrugineus ; abdomen ferrugineum, 

 apicefuscum; alee medio apiceque fuscce. 



Chrysops ferrugatus, Fabr. 

 Carolina. 



2. Dichelacera fasciata. 



Dichelacera fasciata, Diptera Saundersiana, Pt. 1, 68. 

 North America. 



Mexico. 



3. Dichelacera scapularis. 



Fcem. Nigra; facies antennaque basi fulvat ; scapulce, abdomi- 

 nis segmentum lum incisur&que Jiavida ; pedes fusci, tibiis 

 anticis basi fulvis ; ala hyalina, marginibus fuscis. 



Dichelacera scapularis, Macq. Dipt. Exot. SuppL 2, 15, 9. 



