242 INSECTA. 
S. latrinarum; Tipula latrinarum, De Geer, is very common 
in privies, particularly in autumn(1). 
= a 
PrenTHETRIA, Meig. 
Where the eyes are entire and separated in both sexes. The legs 
are long and destitute of spines(2). 
Ditopnus, Meig.—AHirtea, Fab. 
Formerly confounded with the Bibiones; the eyes are contiguous 
in the males and occupy nearly the whole head. A range of small 
spines crowns the extremity of their anterior tibiz(3). 
Finally, the last of the floral Tipulariz have but eight or nine 
joints in their antenne. Those species, in which they consist of 
nine, forming an almost cylindrical and perfoliate club, compose 
the subgenus i 
# 
Brsio, Geoff. Meig.—AHirtea, Fab. 
The Bibiones are heavy Insects, fly but seldom and remain a long 
time in coitus. Some, very common in the gardens of France, have 
received names which indicate the time of their appearance; such 
are the Mouches de St Marc, Mouches de St Jean. The two sexes 
very often differ greatly as to colour, as is observed in the 
B.hortulana; Tipula hortulana, L., the female; /. marci, L., 
the male; Geoff., Ins., II, xix, 3. The male is all black; the 
thorax of the female is a cherry-red, her abdomen yellowish-red, 
and the rest of her body black. Very common on flowers in 
the spring. 
It is thought that these Insects gnaw the buds of plants. Their 
larve inhabit cowdung, earth, and dung-hills, and have little ranges 
of hairs on their annuli. Their pupz are not enclosed in cocoons(4). 
. 
” 
(1) Lat., Meig., Fab. 
(2) See Meig. 
(3) Meig., Ibid. 
(4) See Meigen. 
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