TENTH REPORT OF THE STATE ENTOMOLOGIST 



395 



branous area, and the sclerites are slightly separated along the median line 

 (Fig. 5a). 



Fig 5.— Sciara coprophila : Details of head of larva; a, ventral aspect of head; b, mandible; 

 c, maxilla; rf. apical depression in maxilla wi.h contained ludimentary palpus; e, outline of 

 clypeus, showing location of punctures. All greatly euUrged. 



Pupa. — Length, 2 5 mm. The form of the imago is readily seen; it is a little 

 stouter than in the perfect state. Head and thorax black; abdomen brownish; 

 coxEe yellowish; legs brownish-black. The wings extend to the third abdominal 

 segment ; the tarsi to the fifth . 



In the earlier portion of the pupa state the eyes only are black and they 

 connect behind the antennaa by a very narrow band; dark-brown patches 

 occur on the base of the antennte; the rest of the pupa is a variable yellowish- 

 white. As the pupa develops, the antennae, wing-pads and tarsi darken con- 

 siderably and the head and thorax darken a little ; finally the abdomen begins 

 to darken. 



Imago. — Plate I. Head and thorax black; antennae and abdomen dark- 

 brown ; setaceous. Wings hyaline and in certain aspects somewhat irrides- 

 cent. Coxa dusky-yellow; femur and tibia yellowish-brown; tarsi darker, 

 especially on the terminal segments. Apical portion of the halteres dusky, 

 basal portion yellowish. 



Length, 3.5 mm. The general appearance of the female is given in figure 1. 



Three ocelli occur, the median one being anterior, — figure 2. The eyes are 

 deeply emarginate and extend to the median line behind the antennee; 

 facets separated by an unusually thick frame of chitine, — figure 3. 

 Antennae longer than the head and thorax, composed of 16 segments ; 

 the two basal segments are about as broad as long and bear a few 

 stout setae; the remaining ones are often slightly gibbous with extremities 

 rounded; pediceled distally and invested with numerous fine setae; width 

 to length as 4 to 7, see figure 6. The ridges represented upon the epis- 

 toma in figure 2 are partly internal and the upper portion of the inner ones 

 wholly so, but as they can be easily seen in semitransparency in a mounted 

 preparation, they are, therefore, indicated. The palpi are composed of four 

 segments, — figure 8: basal segment short; second, elongated, capitate distally 

 and bearing a distinct sensory pit; third, similar in form and shorter; fourth, 



