CLITELLARIN^: 81 



the postical vein sometimes touches the discal cell for so minute a space 

 that it may almost be taken for the small cross-vein, but in such cases the 

 species are taken as belonging to the Clitellarincv. ; the antennae of 

 Fycnomalla are rather similar to those of Straiiomys. 



The Clitcllarinrv comprise about fifteen genera from almost all parts of 

 the world ; rather more than a hundred species have been recorded from 

 the PalaBarctic region, but nearly fifty of these belong to Nemotelus, and 

 about forty to Oxyccra. In Britain we have only these two genera (unless 

 IJphippmm should re-occur), and about fifteen species. The metamorphoses 

 of a few species are known and are mentioned in the descriptions. 



Tabic of the European Gene^^a of Clitellarin^. 



(2) Basal antennal joint three or four times as long as the second ; the 

 six-ringed flagellum apparently forming one long peg-shaped 

 joint with a short conical terminal style. Pycnomalla. 



Large Stratioviys-YikQ species. 



(1) Basal antennal joint at the utmost twice as long as the second 

 joint or shorter. 



Fig. 102. — EpMppiuin thoracicum ,5. x 7. 



3 (8) Scutellum armed with two marginal spines. 



4 (5) Thorax with a strong spine on each side just before the wing- 



base (tig. 102). 2. Ephippium. 



Large red and black flies. 



5 (4) Thorax without any strong spine on its sides. 



.¥ 



