72 CECTDOMYZID.E. 



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 Bolitopkila in structure recede much from the typical 

 Mycetophitidce, and are allied to Dixa and Trichocera. 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. ; Zzit.hybrida, Meig. 

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

 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. Antennae black, ferruginous 

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

 greyish, with a grey spot at the tip of the pr&brachial areolet, and a 

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

 with brown tips. Tibiae 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, alts subcinereis, macula 

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

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



Greyish-black. Palpi testaceous. Antennae 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 ; tibiae and tarsi blackish. 



Generally distributed. (E. S. I.) 



FAMILY III. CECIDOMYZID^. 



CECIDOMYZID.E, Hal. D. B. i. 7 (1851). Tipularm Gallicolte, Meig. 

 Cecidomiites, Newm. Cecidomydes, Mcq. Cecidomyna, E-ond. Ceci- 

 domyzides, Zett. Lestremina (olirn) aut Sciarince p., Bond. 



Ocelli Sfspissime nulli. Mesothoracis scutum integrum. Alarum vence 

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

 attingens. 



Body small or very minute. Ocelli very generally wanting. Anten- 

 nae generally more or less verticiUate, pilose, often moniliform, or ^cith 

 petiolated joints. Scutum of the mesonotum undivided. Wings generally 



