THE BIBIONTD.E. f55 



to be true genera ; the latter naturalist unites the species of Heer's 

 two extinct genera to F/ecia. The genus Petithelria^ Mg., also seems 

 to be represented in a fossil state at Aix. 



r-. A A \ Lestremia. Mg 



( Saara. Zett. 



iara, Zett. 



Head semicircular, small. Ocelli three. Proboscis projecting ; 

 palpi 4-jointed, the last joint not longer than the others. Antennae 

 short, 9-jointed, hairy ; first joint large, second larger than third. 

 Abdomen 7 to 8 jointed ; (^ genitalia sometimes large and project- 

 ing. Wings longer than the abdomen, bare ; third and fifth longitu- 

 dinal veins simple ; fourth forked ; first simple. I-egs slender, 

 femora thin ; tibice slender, without spurs. Fig. 3, PI. iii. 



,, ,, .^ -AT \ A. candidata. Hal. 



A. all'ipeufits, Mg. = .' 



I L. almpemiis, Mg. 



Black, shiny ; antennae pale black. Legs yellowish, in thee? some- 

 what longer than in the ? ; hind tibial and tarsi white. Wings milky ; 

 veins pale, except the costal and sub-costal, which are tawny in living 

 specimens. Length i lin. Rare. 



' Tipu/a, L. F. Deg. 

 Ceria, Scop. 

 Genus Scatopse, ^^o^- = ^Aspistes, Ruthe. 



Hirtea, F. Mg. et Zett. 



Body small, long and shiny. Head roundish, narrower than 

 thorax. Thorax convex, hairy : scutellum small. Abdomen with 

 7 or 8 segments, depressed ; extremity of ? truncate (generally), the 

 c^ genitalia usually distinctly visible. Legs comparatively short and 

 somewhat thick ; anterior femora distinctly thickened, tibiai unarmed. 

 Palpi very short, hidden ; the last joint appearing large, and almost 

 seeming as if the palpi were one-jointed. Proboscis slightly project- 

 ing. Antennae lo-jointed ; second joint long, cup-shaped ; last jomt 

 elongated, oval ; middle joints short, transverse. Wings long, broad, 

 bare ; longer than abdomen. Fig 4, PI. iii. 



The larvcC, which are long, fusciform, apodous grubs, live in 

 decaying vegetable matter and human excreta, sewers and open 

 drains. They are terminated by two elongated divergent seta^ 



