286 
Psyche 
[December 
Figure 14. Oligotypus mako'wskii, n.sp. Drawing of holotype, No. 
IWJM-I-C, Makowski collection. Length of wing as preserved, 65 mm. 
Creek shales by only a single species, Paralogopsis longipes Hand- 
lirsch. The new fossil clearly belongs to the family Paralogidae. 
Family Paralogidae Handlirsch 
This family is characterized by having the subcosta terminate at 
about mid-wing, instead of extending to the wing apex, as in other 
families of protodonates ; and by having R.2 + 3 and R4 + 5 widely 
divergent. Two genera are known: Paralogus Scudder, from 
Upper Carboniferous shales (Allegheny Series) of Rhode Island, 
and Oligotypus Carpenter from Lower Permian deposits in Kansas 
and Oklahoma. The new fossil is referable to Oligotypus. 
Oligotypus makowskii, n.sp. 
Figure 14 
Length of wing, as preserved, 65 mm.; maximum width, 18 mm.; 
estimated complete length, 90 mm. Similar to the type species of the 
genus, tillyardi , but with the first forking of Rs occurring basal of 
the termination of Sc; with the area between MA and CuP about 
twice as wide as it is in tillyardi; and with the hind margin of the 
wing more strongly curved than in tillyardi. The cross veins are 
not so numerous as in tillyardi and the cellules formed by the cross 
veins are a little larger than, and not so numerous as, in tillyardi. 
Other venational details are shown in figure 14. 
Holotype: No. IWJM-I-C, in the collection of Mr. Joseph 
Makowski, Chicago; collected in Pit Eleven. The specimen consists 
of about three-fourths of a wing; it is very well preserved, with the 
convexities and concavities of the veins very distinct. The applica- 
tion of water or alcohol brings out the cross veins very distinctly. 
It is not possible to determine with certainly whether the fossil is 
a fore or hind wing; the strongly convex margin suggests the latter. 
