II. C EFFLATOUN. 



behind the cxellar triangle kiiown as the jiost-rertical bristlex (pet-) 

 which may be parallel or diverging, never crossed, short and weak 

 or very rarely wantirg. The ocelhir triangle usually bears a pair of 

 bristles directed forwards, the ocellar bristles (oc.) which may be 

 strong, well developed or weak. 

 Eyes rounded or narrow. 



E : eye; Fr ; frons; F. : face; Au : antenna; Ar. : arista; Lu. : lumila; G. : '^onii 

 or cheek; Pa. : palpu.s; Kp. : 6pi.stoma; Pr. : proboscis; Gn. : geiial luisUe; 

 V. : vertex; oc. : ocellar l;ri.'^tle; vt. : vertical bristles; pvt. : post vertical! bristle; 

 s.or. : superior oi(l>ital brisUes; i.or. ; infcrior orbital liristles; ocp. : occii)ital 

 row of bristles. 



Antennae drooping, important chieflv witb regard the lengtb 

 of the third joint; they are not as a rule very elongated, rarely 

 reaching the epistoma; the arista is usually bare, but sometimes 

 it is ])ube.s(ent or pilose on both sides or only on the upper side; in 

 some Oriental forms, however, it may be plumose. 



The proboscis may be short or more or less elongated and geni- 

 eulate, i.e. with the flaps vef\ nnuh prolonged and directed l)aek- 

 wards. 



