f. Squamula thoracalis broadened mesad and caudad as far as the scutellum.

g. Sternopleural macrochætæ arranged in an equilateral triangle; front of both sexes broad; genæ bare; dorsocentrals six, small; wing not rilled. (To Coenosinæ). Atherigona Rdi.

gg. Sternopleural macrochætæ when three are present, arranged in a right triangle.

h. Last section of R4+5 with a more or less rounded angle ([fig. 163l]).

i. Eyes of the male pilose or pubescent, of the female nearly bare; m-cu crossvein usually at or proximad of the mid-distance between the r-m crossvein and the bend of R4+5. P. (= Placomyia R. D.) vitripennis. Plaxemyia R. D.

ii. Eyes bare; the m-cu crossvein always nearer to the bend of R4+5 than to the r-m crossvein.

j. Apex of the proboscis when extended reveals a circlet of stout chitinous teeth. P. insignis Austen, of India, bites both man and animals. (= Pristirhynchomyia) Philæmatomyia Austen

jj. Apex of the proboscis without black teeth.

k. Eyes of male separated by a distance equal to a fourth the width of the head. House or typhoid fly. M. domestica L. Widely distributed. Musca L.

kk. Eyes of the male contiguous. E. corvina. Europe. Eumusca Town