14 PKOCEEDINGS OF THE NATIONAL MUSEUM vol. 70 



Length, 26 mm. ; diameter, 3 mm. 



Near Plulnmer Island, Md., March 20, 1921, H. S. Barber, col- 

 lector. 



COENOMYIA FERRUGINEA Scopoli 



Plate 2 



Habits. — Larvae appear to be predacious. They have been re- 

 corded as occurring in tields and probably feed on white grubs which 

 are common there. 



There are no specimens of the larva of this species in the national 

 collection. 



Pupa {fig. 12). — Robust, dark yellowdsh red, the thorax shining, 

 smooth, and the abdomen more yellowish subpolitus, rugose and 

 cylindrical. Head broad, very rugose; antennal capsule deep red, 

 short, robust, annulated on apical portion; in front of the base of 

 each antennal capsule is a short conical process pointing outward ; 

 seen from above there is a small, well defined groove medianly in 

 the anterior part of the head, and a long bristle on each side of this 

 groove ; below each antenna is a flattened, pointed process pointing 

 outward, and at its base is a stout bristle ; in the middle of the dorsal 

 part of the head is a small rugose area wnth a large bristle on each 

 side, and in the middle of the ventral part of the head is a broad, 

 flattened process extending forward ; behind this process is a raised, 

 rugose area ; wddth across head about four times the height. Thorax 

 usually as broad as long, sometimes a little longer than broad; the 

 suture at the anterior edge is very sinuous with a deep notch in the 

 middle; near this notch are tw^o short and one long transverse rugosi- 

 ties; at about the anterior fourth of the dorsum is a transverse sin- 

 uous row of small rounded punctures, and on the posterior half of the 

 thorax there are several short, transverse lines of faint punctures; 

 thoracic spiracle (fig. w) is located dorso-laterally on a prominent 

 elevation; the peritreme is shining deep red while the inner part is 

 luteous and nearly dull; in the skin belonging to the elevation and 

 posterior to the spiracle is a depression wuth a narrow black line in 

 the middle, and this line is bifurcated at the anterior end; near each 

 posterior angle of the thorax is a rounded, well defined depression. 

 Abdomen has eight well defined segments of nearly equal length; 

 first segment without a transverse row of spines at its posterior mar- 

 gin ; segments from 2 to 7 with a row of reddish spines posteriorly ; 

 segments from 1 to T have one central and two dorso-lateral pairs of 

 long yellowish bristles; segments 1, 2, 6, and 7 each with a single 

 transverse curved row of small, rounded punctures; segments 3 to 

 5 each has a double row of such punctures ; on a prominent elevation 

 on the side of each segment from 1 to 7 is a heavily chitinized spiracle 



