IX. FAMILY 



Fig. 43. Siniulinm venustum; enlarged. After Washburn. , 



Small flies, from one to six millimeters in length, with 

 thick, short legs. Head hemispherical; face short; 

 eyes round or reniform, holoptic in the male; no ocelli.- 

 Antennae scarcely longer than the head, flattened or cyl- 

 indrical, ten-jointed; the two basal joints differentiated, 

 the others closely united. Proboscis not elongated, with 

 small, horny labella ; palpi incurvate, four-jointed; the 



