i8;.i.j 229 



1 (4) Middle abdominal segments without discal setae {Nemor<Ba, End.). 



2 (3) Abdomen black \. glabrata,'M.g\\, 



3 (2) Abdomen red 2. ruhrica, M.g\\. 



4 (1) Middle abdominal segments with discal setae {Platycliira, End.)- 



5 (6) Cheeks clothed with fine hairs Z. pnparum,'E\n. 



6 (5) Cheeks bare. 



7 (18) Palpi yellow or rufous. 



8 (9) Antennae with basal joints yellow 4. strenua,M.ga, 



9 (8) Antennae black. 



10 (15) Thorax with three stripes. 



11 (12) Scutellum with apex red 5. r«^an5, Mgn. 



12 (11) Scutellum black. 



13 (14) Wings with cubital appendix 6. appendiculata, Mcq^. 



14 (13) Wings without cubital appendix . ...7. tiemorum, Mgn. 



15 (10) Thorax with four stripes. 



16 (17) Thoracic stripes narrow, and placed at equal distances from each other.. 



8. rudls, Fin. 



17 (16) Thoracic stripes wide, and middle ones nearer to each other than to the 



outer stripes 9. consobrina, Mgn. 



18 (7) Palpi black. 



19(20) (21) Abdomen marked with two well defined, broad, transverse, white bands .. 



10. fadicum, F. 



20(19) (21) Abdomen marked with two broad, undefined, white bands or tessellations 



11. ccBsia, Fin. 



21 (19) (20) Abdominal bands very narrow, and wings with short cubital appendages 



12. intermedia, Zett. 



All the species of Nemoraea have the tliorax black or grey, some- 

 times with a green or bluish tinge ; it is always also more or less 

 distinctly marked with either three or four longitudinal stripes, and 

 whitened with grey tomentum on the front margin and sides ; in my 

 diagnosis of the different species I shall, therefore, only mention its 

 colour w^hen it varies from the ordinary type. The same remarks will 

 apply to the colour of the legs, which is black or dark grey in all the 

 species. 



N. GLABRATA, jMgn. 

 I have not seen either a British or foreign specimen of this species, but have 

 introduced it owing to its being recorded as British by Mr. F. Walker in the sup- 

 plementary list of British Ta^hinids published in the Appendix to the second vol, 

 of the lusecta Britannica. 



N. EUBRICA, Mgn. 

 This and the foregoing species are the only two recorded British ones that 

 belong to Kondani's restricted genus Nemorcea, in which the middle abdominal 



Y 



