74 Ortliorrhapha l)rachycera. 



Table of larvæ of the Genera and of some Species. 



1 . A coronet of feathery liairs at the apex of the body 2. 



— No coronet of hairs al the apex of the body 5. 



2. The last segment cleft in the apex, terminating in two 

 processes, the hair-coronet lying on the upper surface of the 



segment at the apex, not very conspicuous. . 2. Nemoteliis (pantherinus). 



— The last segment not cleft, the hair-coronet situated in the 



apex of the segment -5. 



3. Body relatively short and broad witli rather strong bristles 



on the dorsal surface; last segment nearly qiiadratic. . 3. Oxi/cera (trilinetita). 



— Body more elongate ; last segment longer thaii broad 4. 



4. Last segment much to very much longer tlian broad : anus 

 near to its base ; some of the middle segments with a spine- 



like protuberance at the anterior corners 4. Stratiomyiu. 



— Last segment moderately longer than broad ; anus about in 

 the middle ; ventral hind margin of sixth and sevenlh, or only 



of seventh segment, with curved spines 5. Odontomyia and 



6. Hoplodonta. 



5. The last segment subquadratic: body with long bristles 



1 . Pachijgaster {tarsalis). 



— The last segment more or less semieircular 6. 



C. The last segment quite semieircular; the incisure betwcen this 



and the penultimate segment much curved ; head with rather 



large eye-swellings 7. Sargus {cnprarius. iridatns, flavipes). 



— The last segment with a small excision in the apex, incisure 

 between this and the penultimate segment slightly curved : eye- 

 swellings not especially large 8. 



8. Excision in the apex rather distinct; the Iwo median, apical 

 bristles of the last segment nearly as long as the others 



~ 8. Chioromi/ia (formosa). 



— Excision in the apex very small: the two median apical bristles 



of the last segment smaller than the others ... 9. Microchrijsa (polita). 



Stratiomyia. 



1. Tail part long and slender; last segment very long and thin, 

 about twice as long as the penultimate; only the second and 

 third abdominal segments with a spine-shaped protuberance 

 at the anterior corners S. furcatu. 



— Tail part moderately long; last segment only slightly longer 

 than the penultimate; the four first abdominal segments with 



a spine-shaped protuberance at the anterior corners 5. longicornis. 



Odontomyia and Hoplodonta. 



1. Sixth and soventh abdominal segments with curved spines at 



the ventral hind margins; body sparingly haired O. ornata. 



— Only seventh abdominal segment with curved spines at the 

 ventral hind margin 2. 



2. The small spines between the segments rather distinct O.angitlata. 



— The small spines between the segments indistinct 3. 



