72 CECIBOMYZWM. 



Abdomen linear, nearly cylindrical. Fein. 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 BoUtopldla in structure recede much from the typical 

 Mi/cetop/iilida, and are allied to Bwa and lYichocera. 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. ; Zati. —Jiyhrida, Meig. 

 Kl. — Samidersii, Curt. — maculipeunis, Walk. — bimaculata? Zett.; Staeg. 

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

 rugineis, thoraee ferrugineo bivittato, alls snbcinereis macula discali 

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

 4 ; alar. 7 lin. 



Ferruginous. Vertex greyish-black. Antennas black, ferruginous 

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

 greyish, with a grey spot at the tlj) of the pralrachlal areolet, and a 

 larger broton spot hy the costa at the tip of the radial vein. Haltcres 

 with brown tips. Tibiae and tarsi brown. 



Hare. (E.) 



2. cinerea, Hoffm ; Meig. ! Zw. i. 221. 1. pi. 8. f. 1 (1 818) ; Mcq. ; 

 Zett. 



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

 teunis nigris basi testaceis, pectore ferrugineo, alis subciuereis, 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 ; tibise and tarsi blackish. 



Generally distributed. (E. S. I.) 



Family III. CECIDOMYZID^. 



Cecidomyzid.I]:, Hal. D. B. i. 7 (1851). Tiptdarice Gallicola, Meig. 

 Cecidomiites, Newm. Cecidomydes, Mcq. Cecidomyna, Ilond. Ceci- 

 domyzides, Zett. Lestreinina (olim) aut Sciarinco p., Eond. 



Ocelli sapissime nulli. Mesothoracis scutum integrum. Alarum vence 

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

 altingens. 



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

 na generally more or less verticillate, pilose, often moniUform, or with 

 petiolaled joints. Scutum of the mesonotum undivided. JFings generally 



