72 CECIDOMYZID^. 



Abdomen linear, nearly cylindrical. Tern. Antennae nearly bare. Ab- 

 domen elongate-fusiform, with nine segments ; eighth small ; ninth 

 very small, almost retracted. Tentacles exserted ; their second joint 

 smaller, ovate-orbiculate. 



The Bolitophilce in structure recede much from the typical 

 Mycetophilidce, and are allied to Dixa and Trickocera. The two 

 British species frequent shady places during the greater part 

 of the year, and appear even in the middle of winter when the 

 weather is mild. 



1. fusca, Meig. Zw. i. 221. 2 (1818) ; Mcq. ; Zeit.hybrida, Meig. 

 Kl. Saundersii, Curt. maculipennis, Walk. bimaculata? Zett.; Stseg. 

 Ferruginea, vertice thoraceque nigro-cinereo, antennis nigris basi fer- 

 rugineis, thorace ferrugineo bivittato, alls subcinereis macula discali 

 cinerea et costali fusca, halteribus apice tibiis tarsisque fuscis. Long. 

 4 ; alar. 7 lin. 



Ferruginous. Vertex greyish-black. Antenna black, ferruginous 

 at the base. Thorax with two ferruginous stripes. Wings very slightly 

 greyish, with a grey spot at the tip of the prcebrachial areolet, and a 

 larger brown spot by the costa at the tip of the radial vein. Halteres 

 with brown tips. Tibise and tarsi brown. 



Eare. (E.) 



2. cinerea, Hoffm ; Meig. ! Zw. i. 221. 1. pi. 8. f. 1 (1818) ; Mcq. ; 

 Zett. 



Nigro-cinerea, palpis, halteribus, coxis femoribusque testaceis, an- 

 tennis nigris basi testaceis, pectore ferrugineo, alls subcinereis, macula 

 parva costali cinerea, halteribus apice fuscis, tibiis tarsisque nigricanti- 

 bus. Long. 2J-3 ; alar. 4-5 lin. 



Greyish-black. Palpi testaceous. Antenna? black, testaceous at the 

 base. Pectus ferruginous. Wings very slightly greyish, with a small 

 grey spot by the costa at the tip of the radial vein. Halteres testaceous 

 with brown knobs. Legs testaceous ; tibiaa and tarsi blackish. 



Generally distributed. (E. S. I.) 



FAMILY III. CECIDOMYZID^. 



CECIDOMYZID.E, Hal. D. B. i. 7 (1851). Tipularia GaUicoltf, Meig. 

 Cecidomiites, Newm. Cecidomydes, Mcq. Cecidomynce, Bond. Ceci- 

 domyzides, Zett. Ijestremina (olim) aut Sciarina p., Bond. 



Ocelli sapissime nulli. Mesothoracis scutum inl.egrum. Alarum VKHCB 

 usque ad apices sex aut pauciores ; vena costalis alee iipicem plerumque 

 attingens. 



Body small or very minute. Ocelli very generally wanting, .iiden- 

 nee generally more or less verticillate, pilose, often monilifonn, or icith 

 petiolated joints. Scutum of the mesonotum ttndtviekd. Whigs generally 



