116 ANALYTICAL TABLE OF FAMILIES 



PROBOSCIDEA 



53 (54). Antennae (plate III, 39, 40) with a long seta or bristle 



PLATYPEZIDyE, XXVI 



54 (53). Antennae (plate III, 48) with a short seta or spine 



PartofCONOPlD&, XXIX 



55 (33). Arista dorsal (plate III, 27, 33, 34, 41-47, 49-55). 



56 (6l). O, 6 1 long (plate V. l8-2l) extending nearly to hind mar- 



gin : D without strong bristles (macrochaetae). 



57 (60). Proboscis of moderate length (plate VI, 12-16) generally 



retracted. 



58 (59). Vena spuria (plate V, 18) absent ; A, II very large ; O, 4* 



open. 



PIPUNCULID^:, XXVII 



59 (58). Vena spuria present (plate V, 19-21); O, 4 2 . closed ; A, II 



moderate. 



SYRPHID^-, XXVIII 



60 (57). Proboscis projecting far in front, very thin and long, often 



double-kneed (plate VI, 27) ; no vena spuria (plate V, 2IJ). 



Part of CONOPID,, XXIX 



6 1 (56). O, 6 1 short, not nearly reaching margin, or absent (plate V, 



12, 22-39) abdomen often with strong bristles. 



62 (63). Proboscis and palpi atrophied. 



GESTRIM, XXX 



63 (62). A, VIII, 3 and 4 distinctly present. 



64 (67). X, 5 1 absent, X 5 2 present, i.e., only oneJX-vein on V, 5 and 



that beyond X, 4. 



65 (66). X, 4 very near base of wing (plate V, 14, 15) ; X, 5 far 



beyond X, 4. 



Par/o/DOLICHOPODID^;, XXIV 



66 (65). X, 4 more towards middle of wing (plate V, 12, 36, 37) 



nearer X, 5. 

 66a (666). Proboscis directed straight downwards. 



Part of EMPID.E, XXIII (genus Stilpon) 



666 (66a). A, VIII, 3 retracted [ordinary Muscid type] pass on to 

 108 of this table. 



67 (64). X, 5 1 present, that is, a X-vein on V, 5 before, or under X, 4; 



or no X-veins on V, 5. 



68 (69). No X-veins on V, 5. 



Part of PHYTOMYZID/E, LIV 



69 (68). At least X, 5' present, generally also X, 5 2 . 



70 (75), Squamae distinctly present though sometimes small. 



