3(5 1 Febniai-y, 



The species are mostly of a middle size, of a greyish-black colour, 

 and marked on the thorax and abdomen in a very similar manner to 

 those in the genus Exorista. 



1 (22) Legs black. 



2 (16) Palpi yellow or red. 



3 (14) Wings with an appendix. 



4 (11) Scutellum partly or wholly rufous. 



5 Middle abdominal segments without discal setaa. 



6 (9) Face generally luteous. 



7(8) (10) Frontal stripe narrower than the sides of the frontalia, and the facial 

 setse reaching nearly up to the fronto-orbital ones...!, larvarum, L. 



8(7) (10) Frontal stripe equal in width to the sides of the frontalia, and the facial 



setae at some distance from the fronto-orbital ones... 



2. noctuariim, End. 

 9 (6) Face generally white. 



10(7) (8) Fi'ontal stripe wider than the sides of the frontalia, and the facial setae 



reaching quite up to the fronto-orbital ones 3. latifrons, 'Rnd. 



1 1 (4) Scutellum black or grey. 



12 (13) Middle abdominal segments with discal setae 4. rustica, Fin. 



13 (12) Middle abdominal segments without discal setae 5. erucarum,'Rnd. 



14 (3) Wings without, or with a very slight, appendix. 



15 Thorax blue-black and glistening, with white reflections... 



6. angelicce, Mgn. 

 Ifi (2) Palpi black. 



17 (20) Abdominal segments marked with straight black and white transverse 



. bands. 



18 (19) The white abdominal bands very narrow 7. hrevipennis,M.g\-\. 



19 (18) The black and white bands nearly equal in width 8. morosa, M.gr\. 



20 (17) Abdomen tessellated with brown and black patches, which form irregular 



transverse bands 9. agilis, Mgn. 



21 The first posterior cell ending close to the tip of the wing, and nearly, or 



quite, closed 10. hortensis, Mgn. 



22 (1) Legs with the tibiae rufous 11. tibialis, ^\w. 



T. LARVAEUM, L. 



Sides of frontalia and face mostly luteous ; frontal stripe narrower than the .^ides 

 of the frontalia ; fronto-orbital bristles extending quite half way down the face ; 

 facial bristles* reaching up to within a short distance of the former ; peristome 

 armed on each side behind the vibrissse with a row of bristles extending backwards ; 

 palpi yellow ; antennae black, with the second joint sometimes rufous at the end, and 

 about two-thirds of the length of the third joint, which is often thickened ; thorax 

 and abdomen clothed with grey pubescence, which is mostly luteous, the former is 

 marked with four longitudinal black even stripes, and has four external dorso-central 

 bristles behind the transverse groove ; the latter has the first segment black, and 



* These are the oral bristles uf Rondani and Schiner (" Mundborsten "), they are on the edges 

 of the facialia. 



