6 PROCEEDINGS OF THE KATIOXAL MUSEUM vol. 70 



of reddish yellow chitin which is composed of small amoebalike 

 pieces. Caudal plate is reddish yellow, large, nearly round and 

 terminating in a broad bifid projection with two pointed prongs, 

 Avhich are well separated and curved upward; each prong has three 

 bristles; on the ventral side at the base of this caudal projection 

 is a pair of large bristles; in the middle of the caudal plate is a 

 faint depression in which are several small, rounded punctures and a 

 row of four similar punctures on each side; near the base of the 

 plate are the posterior spiracles (fig. /) ; they are round, slightly 

 elongate, and darker red, wdth the middle part faintly depressed 

 and surrounded by a narrow, serrated, light-colored band; in the 

 center of the depression is a small black ci-escent band: anterior to 

 the spiracles is a pair of bristles and on each side are two bristles. 

 Venter of first segment has on each side a triangle of chitin like that 

 on the dorsum; between segments 3 and -1, and betAveen all of the 

 following segments to between 9 and 10, is a roughened transverse 

 band of small reddish spines. Anal opening elongate, surrounded by 

 a narrow darkened linear depression which has a V-shaped arm on 

 each side. 



Length, 9 mm.; diameter, 1.4 mm. 



Rosslyn, Va., April 25, 1913, in rotton log, R. C. Shannon, col- 

 lector. Great Falls, Va., April 12, 1924. larvae in log of sycamore, 

 pupated May 11, 1924, adults emerged May 25, 1924, C. T. Greene, 

 collector. 



Pupa (fig. 10). — Pale to dark reddish 3^ellow; nearly opaque; 

 head and thorax more shining than the abdomen, which is cylindri- 

 cal and rather dull. The antennal capsules are more reddish than 

 the head, annulated and enlarged at bases ; a deep rugose depression 

 occurs between the bases of the antennal capsules; a small yelioAv 

 bristle directed forAvard is situated near the anterior portion of each 

 of them, and on their anterior edge is a large keel-shaped, rugose, 

 inwardly directed projection, both projections touching each other, 

 and generally there is an opening betAveen them, but sometimes not; 

 head is rounded and bears three deep, circular, ocellar punctures ; on 

 the side of each posterior ocellus is a small bristle-like hair. Thorax 

 much longer than Avide; near the anterior dorsal end is a sinuous 

 roAV of small rounded punctures Avhich are much larger laterally; 

 at the anterior angles of the thorax are the prothoracic spiracles 

 (fig. s) which are of a very deep reddish color; the slits in the 

 entrance place are rounded, bead-like, and pale yelloAv. The abdomen 

 is composed of eight segments, the first segment about half as long 

 as the second and the segments from 2 to 7 about equal in length; 

 dorsum of segment 1 has a transA^erse roAV of four pairs of bristles 

 near the transverse median line, and semnents from 2 to 7 have two 



