INSECTA. 343 
a) Antenne longer than body. Ocelli three, disposed in a, tri- 
angle, Macrocera MEIG. 
6) Antenne shorter than body. Ocelli three, placed in a trans- 
verse line. Bolitophila Horrmannsecc, Merc. 
On the metamorphosis, comp. Guérin, Mémoire sux un Insecte du genre 
Bolithophile, Ann. des Se, nat. X, 1827, pp. 399—411. Pl. xvimt. 
Chionea Datm. Antenne setaceous, with ten joints. Palps 
with four sub-equal joints. Ocelli none. Body apterous, with 
poisers. 
Sp. Chion. araneoides, Datman Kongl. Ventensk. Acad. Handb. 1816, 102 ; 
Oxen’s Isis, 1824, p. 419, Tab. v.; GuGRIN Iconogr., Ins. Pl. 93, fig. 2 ; 
found in Sweden on the snow. 
Anisomera HOFrFMANNSEGG, Mutc. (Hewatoma Latr., Nematocera 
Merc.) Antenne very long, setaceous, with first joint cylindrical, 
second short, cup-shaped, third elongate, filiform. Palps with four 
equal joints. Wings mcumbent. 
Megistocera WiEDEM. 
Dixa MEtc. 
Macropeza Mutca. 
Trichocera Mri. 
Polymera W1EDEM. 
Limnobia Merc. Antenne setiform, joints 15—17; first joint 
cylindrical, second cup-shaped, rest oblong or globose. Palps with 
four equal joints. Ocelli none. Wings incumbent, parallel, with 
nervures naked or pilose (Hrioptera Mra.) 
Add sub-genera: Symplecta Metc., Cylindrotoma Maca. (antenne 
with thirteen cylindrical joints), Limnophila Mace, J dioptera 
Maca., Rhamphidia Metc., Maca, 
Sp. Limnobia picta, Tipula picta Fasr., ScHELLENBERG Tab. 38) for: 
GuéRIN Iconogr., Ins. Pl. 92, fig. 9 (named Limnobia ocellaris), &e. Comp. 
T. E. Schummen, Beschreibung der in Schlesien einheimischen Arten von 
Limnobia, Beitrage zur Entomologie t. Breslau, 1829, 8vo, s. 97—201. Tab. 
1—5; B. Srannius zur Verwandlungsgesch. der Limn. Xanthoptera, ibid. s. 
202—206, 
Rhipidia Meia. 
Ozodicera MACQ. 
