654 LIST OF DIPTEBA. 



19. Proctacanthus basifascia. 



Mas. et foern. Ferrugineus ; caput testaceum, mystace barbaque 

 concoloribus ; antenna picece ; thorax vittis tribus pallidis ; 

 abdomen cervinum, basi nigro fusciatum, apice rnfo badium ; 

 pedes rufo badii ; alee subcinerece,fusco subnebulosoe. Fcem. — 

 Abdominis latera nigro vittata. 



Ferruginous. Head testaceous. Mystax and beard whitish 

 testaceous, the former ascending to the antennae. Antennae piceous. 

 Thorax with three slender dull testaceous stripes. Abdomen fawn- 

 colour, with testaceous bails towards the base, which has a blackish 

 band ; tip dark red. Legs dark red, with black spines and claws. 

 Fern. — Abdomen with a blackish stripe along each side. Length of 

 the body 7 — 10 lines ; of the wings 14 — 16 lines. 



a, b. Santarem, Brazil. From Mr. Bates' collection. 



Arabia. 



20. PROCTACANTHUS NIVEUS. 



Albo pubescens ; alee albce. 

 Proctacanthus niveus, Macq. Dipt. Exot. i. 2, 121, 1. 

 Arabia. 



Australia. 



A. Abdomen cyaneo-nigrum. ... Durvillei, Macq. 



B. Abdomen cinereum, apicem versus nigrum, subtus fulvum. 



posticus, Walk. 



Group 1. 



Fcem. Corpus parvum. Caput subtus pilosum. Mystax sat 

 dense pilosus. Proboscis robusta, sublinearis. Antennarum articu- 

 lus lus 2o longior; 3us lanceolatus, lo multo longior; arista crassa, 

 brevissima. 

 P. Posticus, Walk. 



21. Proctacanthus Durvillei. 



Fcem. Ater ; thorax fiavido pubescens, nigro trivittatus ; abdomen 

 cyaneo-nigrum ; tibiae testacece. 



Proctacanthus Durvillei, Macq. Dipt. Exot. i. 2, 121, 2. 



New Holland. 



