86 
Psyche 
[Vol. 90 
at Yale University, is without question a synonym of cianielsi. Hand- 
lirsch mentioned a fine archedictyon on the wings and he placed the 
insect in the family Dictyoneuridae, but I can find no suggestion of 
it in the fossil. The matrix of that particular concretion is unusually 
granular and I surmise that Handlirsch interpreted the granulation 
as an archedictyon. If the fossil is moistened with alcohol, the char- 
acteristic cross veins of Euhleptus are discernible. The venational 
pattern, even as shown in Handlirsch’s drawing, is identical with 
that of danielsi, although his figure incorrectly depicts some of the 
veins with pectinate instead of dichotomous branching. The type of 
parva is about the size of that of danielsi, the fore wing being 13 
mm. long, with a maximum width of 4 mm. 
Specimens of Eubleptus danielsi Studied 
I have been able to examine seventeen specimens of danielsi dur- 
ing this investigation. For convenience of reference, I include here 
an annotated list of these:'* 
1. National Museum of Natural History, Washington, No. 38731 
(reverse half only). Mazon Creek. Holotype of danielsi. Poorly pre- 
served, showing about three-fourths of a fore wing, but virtually 
nothing of the body and hind wing. Fore wing, as preserved, 13 mm. 
long. 
2. Peabody Museum of Natural History, Yale University, No. 
18. Mazon Creek. Holotype of Athymodictya parva. Poorly pre- 
served, showing proximal portions of fore and hind wings, as well as 
pronotum, pterothorax, and parts of abdomen. 
3. Paul Harris collection, no. PH 15. Pit Eleven. Excellent pres- 
ervation of entire insect, except end of abdomen; the best specimen 
known. Especially good are the wings (which include the color 
markings), the pronotum, and the head, which shows the antennae, 
and eyes, and the location of the beak. 
^There are apparently only two exposures of the Francis Creek Shale at which 
specimens of danielsi have been found: Mazon Creek, the bed of the stream about 4 
miles west and a mile north of Coal City; and Pit Eleven, a strip mine of the Peabody 
Coal Co., in Will and Kankakee Counties, Illinois. 
