234 
Psyche 
[September- December 
12. Levi Sherman collection, No. W57. Probably Pit Eleven. 
Female; exceptional preservation of many details; fore wing vena- 
tion faint, but basal part of wing very clear; also cross veins in dis- 
tal part of fore wing, base of antennae, mandibles, all femora 
and ovipositor. Costal area with relatively few veinlets. 
13. Wolff collection. No. 243. Preservation poor; abdomen 
missing but some good details of thorax, expecially prothorax; 
head in hypognathous position. 
14. Wolff collection. No. 653. Female; very incomplete speci- 
men but excellent for anal area of fore wing; hind femora and 
ovipositor good. 
15. Morreau specimen. Pit Eleven. Very poor preservation 
but determination as ovalis virtually certain. 
16. University of Chicago, No. U.C. 9242 (at Field Museum). 
Mazon Creek. Holotype of E. mazonus Melander. Male; preserva- 
tion poor, but shows femora, tibiae and tarsi. 
17. Field Museum, No. PE 20790. Pit Eleven. Entire insect; 
abdomen not preserved, wings folded back and venation jumbled; 
head and thorax excellent: head, antennae, palpi, prothorax and 
legs. Cross veins clear in several areas of fore wings. 
18. Field Museum, No. PE 31959 (Herdina 417). Pit Eleven. 
Male; preservation fair of head, prothorax and wings. 
19. Field Museum, No. PE 32038 (Herdina 476). Coal City. 
Very poor preservation but enough to permit identification. 
20. Field Museum, No. PE 32065 (Herdina 212). Pit Eleven. 
Male; preservation only fair, but prothorax very good. 
21. Field Museum, No. PE 32067 (Herdina 213). Pit Eleven. 
Male; entire insect faintly and poorly preserved; no details of 
body. 
Since no one specimen gives a satisfactory concept of this in- 
sect, a composite drawing is included in figure 2. The general 
habitus of the insect, as drawn, is based on the Frank Greene 
specimen, (G75; see photographs, figures 3 and 4), and details 
have been added from other fossils, as follows, the numbers re- 
ferring to the specimens in the foregoing list: head (including eyes, 
maxillary palpi, antennae, mandibles), 11, 12, 17; prothorax, 3, 
11, 12, 13, 17; rest of thorax, 11, 12, 17; fore wings, 2, 11, 12, 14; 
hind wing (fragments only), 2, 10; legs, 2, 8, 10, 11, 12, 14, 16, 
17; abdomen, 2, 9, 10, 11, 12; cerci, 2, 8; ovipositor, 2, 10, 12, 14. 
All structures shown in the figure are preserved in one or more 
