214 
18. 
I9. 
20. 
21. 
22. 
VER 
24. 
Ceratomerus, Philippi, Verh. Zool.-bot. Ges. Wien, Vol. 15, p. 766 (1865); Bigot, Ann. Soc. Ent. 
France (6), Vol. 9, p. 124 (1889); Bezzi, Nova Acta Akad. Naturf. Halle, Vol. 9t, p. 3oo (1909); 
twice as long as the head, palpi retracted. 
DIPTERA 
Face projecting more than half the eye-height below the eyes. . 
Face projecting less than half the eye-height below the eyes. . 
Stigma large and more or less circular, located much beyond 
the end of the first vein, the second vein. curving. beneath. the 
stigma, somelimes a clouding from the stigma extending below 
ihe second vein; five or six dorsocentrals with rather long 
alternate bristles; scutellum with discal setule . . . . . 
Stigma elongate, beginning at end of first vein and not touching 
second vein... . S | 20 c E 
Eyes round ; face in roll iuchsuio 40259 0 ea 
Eyes oval, longer than wide; face tapering below... . . . 
Stigma rounded, beginning much beyond end of first vein; 
alternate weak dorsocentrals present ... . . . 
Stigma elongate, beginning at end of first vein... 
All femora bearing strong anterior and Posterior prenpiond 
bristles; costal spines strongly projecting ; acrostichals if 
present proclinate . . . ; "^ 
Femora without distinct. preapical dristles but. sometimes with 
short Preapical sele; costal setule mot strongly frojectiug, 
usually minule and inclined... . . e s 
Front femora wilh an oblique comb of about Jv PHEN just before 
ihe nee on the inner side; acrostichals short and. weak, ouly 
the anterior ones Present ; only the strong dorsocentrals present ; 
sculellum with marginal setule in. addition to the pair of 
Pude... x y 
Front. femora without v of ssl. near ieÉn; slursit 
smaller dorsocentrals Present ; acroslichals forming a complete 
row, reclinate in front and proclinate in bach. . 
Front. femora with about. four. distinct sete at. apical third v 
inner side ; sculellum rarely bearing more than the apical pair 
of bristles ; arista usually blunt . . . . : 2g 
Front femora devoid of pronounced. setule viis; siii 
SUE MEM. . . s No. o 4OUR IP C de 
I. GeENUs CERATOMERUS, PHILIPPI 
Kertész, Cat. Dipt. Vol, 6, p. 111 (1909). 
Characters. — Erownish species with infumated wings whose venation is similar to that of 
Hemerodromia, with lengthened antennz and in the male with deformed legs. Head globular; antennce 
inserted at the middle of the head, the first antennal joint as long as the head, the second joint short, 
the third joint elongate oval, its arista about one-half as long as this joint. 
Abdomen cylindrical, attenuated before the tip, the apex 
. Subgenus CauzLoris, Engel. 
Subgenus WIEDEMANNIA, S. Str. 
E E * LI EL . . * * * 
Subgenus CriNocERELLA, Engel. 
Subgenus PsEUDoWIEDEMANNIA, Engel. 
uda uU LIN . 44. 
Subgenus EuckrLIDIA, Mik, 
n : * 4 
Subgenus RoEDERELLA, Engel. 
* * * * * LI LJ *- . 24. 
Subgenus CHAMAKDIPSIA, Mik. 
Subgenus PuiLoLuTRA, Mik. 
Proboscis perpendicular, 
