NO. 1206. ICHNE TIM ON FLIES— A SHMEA D. 137 



T\v(Mitv-one o-oiioru Ikivc Ixmmi rocog-nized, se])ai'al)l(' :is follows: 



TAHlJi OF GENERA. 



AV)domen with the sutures between the segments deep and usually crenulate, the 

 apical margins of the segments sometimes rimmed or reflexed 2 



A1)doineii with tlie sutures between the segments normal, or at the most with only the 

 second deepand crenulate, thesecond and third sometimes connate; dorsal 

 segments witliout transverse furrows, except sometinics the second 5 



2. Head transverse, the temples more or less narrowed or oblicjue 4 



Head quadrate or nearly, the temples broad. 



Scape simple, unarmed 3 



Scape armed with a tooth beneath. 



(1052) Odontoscapns Gribodo ?=ChaolUa Cameron. 



3. Abdomen elongate and much narrowed; dorsal segments 3-5 at base, with 



broad, transverse, crenate furrows and with oblique, usually crenate, 

 furrows laterally, the apical margins elevated. (Sium. ) 



(1053) Zuglypiogastra Aahmead, new genus. 



(Type, Znglyptogaster abhoUi Ashmead, manusci'ipt. ) 



Abdomen broad, oblong-oval ; dorsal segments 2-4, with deep, transverse, usually 



crenate, furrows, the second also with an oblique furrow on each side, 



extending from the basal middle to the lateral depressions. 



(1054) Iphlaulax Ydrster=Ipohracon Tiiomson. 



4. Abdominal segments 2-4, with oblique lateral impressions, and all longitudinally 



striate or aciculate (1055) Glyptomorpha Holmgren. 



5. Labrum short, not elongate or rostrif orm 6 



Labrum elongate, rostriform or nearly. 



Abdomen elongate, the second dorsal segment and sometimes the third with 

 oblique or curved lateral furrows or depressions, basal segments for the 

 most part longitudinally striate or aciculate (1056) T'^y/o Latreille. 



6. Head transverse or obtrajDCzoidal, as seen from above, the temples rarely broad, 



usually narrow or very oblique, never as broad as the width of the eyes; 



metathoracic spiracles most frequent, very minute, inconspicuous 11 



Head quadrate or cubical, the temples broad. 



Hind wings with only one marginal cell 7 



Hind wings with two marginal cells (1057) Heteropteron Brulle. 



7. Anterior tarsi not twice as long as their tibia'; penultimate abdominal segment 



not so long as the preceding 8 



Anterior tarsi at least twice as long as their tibite; penultimate al)dominal seg- 

 ment twice as long as the preceding (1058) Mt'guproctns Brulle. 



8. Second cubital cell shorter than the first; the second abscissa of the radius 



rarely longer than the first transverse cubitus, and most frequently 

 shorter than the first abscissa of the cubitus; scape not long, subglobose, 

 obconic or clavate; pedicel and first joint of the flagellum equal or 



nearly 10 



Second cubital cell always much longer than the first; the second abscissa of the 

 radius nearly twice as long as (or even longer than) the first transverse 

 cubitus. 



Eyes not so large, entire, never emarginate within 9 



Eyes very large, occupying the whole sides of the head and emarginate 

 within opposite the insertion of the antennae (Africa). 



(1059) Curriea Ashmead, new genus. 

 (Type, Curriea fasciatipennis Ashmead, manuscript.) 



9. Scape rather long, cylindrical, truiu^ate at apex, the pedicel much shorter than 



the first joint of the flagellum, the third flagellar joint shorter than 



