CTENOPKORA. 333 



fusco, abdomine luteo fascia interrupts maculisque lateralibus nigris, 

 pedibus nigris, femoribus basi fulvis. Long. 4|-6 ; alar. 9-11 lin. 



Yellow. Head luteous, with a black triangular spot behind, and a 

 black dot on each side. Proboscis with a black stripe above. Palpi 

 and antennae black. Thorax with three black stripes, the lateral pair 

 short ; sides and pectus with black spots. Wings greyish, narrower 

 than those of P. pratensis, with a testaceous tinge along the costa ; 

 stigma pale brown. Halteres testaceous, with blackish knobs. Abdo- 

 men luteous, with an interrupted black stripe ; a row of black spots 

 along each side. Legs black ; femora tawny, black towards the tips. 



Common. (E. S. I.) 



36. imperialis, Meg. ; Meig. Zw. i. 196. 39 (1818) ; Mcq. ; 

 Schumm. ; Stseg. ; Zett. scalaris, Hoffm. ; Meig. ; Ross. (V.). Flava, 

 capite luteo striga nigra, antennis nigris basi pallidis, thorace vittis 

 tribus nigris, alls sublimpidis, abdomine vitta dorsali interrupta nigra, 

 pedibus testaceis, femoribus tibiisque apice tarsisque nigris. Long. 

 8-9; alar. 14-15 lin. 



Yellow. Head luteous, with a black streak behind-. Proboscis and 

 palpi testaceous. Antennae black, luteous, or yellow at the base. Thorax 

 with three broad black stripes, the middle one in advance ; scutellum 

 brown. Metathorax with a brown stripe, and sometimes with a brown 

 spot, on each side. Wings nearly limpid; stigma dark brown; veins 

 black, testaceous at the base. Halteres testaceous ; club partly brown. 

 Abdomen with a black dorsal stripe, which is generally interrupted on 

 the fore border of each segment. Legs testaceous, long, slender ; tarsi, 

 except towards the base, and tips of the femora and of the tibiae, black. 



Not rare. (E. S. I.) 



37. crocata, L. F. S. 1739(1761); F. ; Gmel.; Meig.; Mcq.; 

 Gimm. ; Zett. ; Schumm. ; Staeg. ; Eoss. (V.). flavo-fasciala, D. G. 

 Atra, macula verticis, thoracis fascia antica maculisque lateralibus flavis, 

 alis cinereis fusco-nebulosis, stigmate nigro, nbdomine fasciis tribus 

 luteis, femoribus basi fulvis. Long. 10; alar. 12 lin. 



Deep black. Head with a luteous spot on the vertex. Thorax with 

 a short yellow band in front, and with luteous spots along each side. 

 Winys grey, more or less clouded with brown ; stigma black. Halteres 

 piceous. Abdomen with three luteous bands ; femora tawny towards 

 the base. 



Not common. (E. I.) 



Genus XVI. CTENOPHORA. 



CTENOPHOB.A, F. S. A. 17 (1805) ; Meig. ; Curt. ; Mcq. ; Zett. ; Gimm. 

 Tipula p., L. ; Schr. ; F. E. S. ; Gmel. Tanyptera, Latr. Dictenidia 

 et Xipliura, Brulle. 



Corpus magnum, oblougum, robustum, glabriculum, saepissimc nitidum. 



