1960] 
Carpenter — Protodonata 
IOI 
Family Paralogidae 
1 he distinctive features of this family are the short subcosta, which 
terminates just beyond the middle of the wing; and the widely di- 
vergent branches of Rs (R2 + 3 and R4 + 5). The complete absence 
of the apparent vestige of CuA may also be a family trait. Paralogus 
is the only Carboniferous genus that clearly belongs here but in my 
opinion the Permian genus Oligotypus Carp, does also. Fraser (1957) 
considered Oligotypus to be a meganeurid, but, as shown below, his 
concept of the Paralogidae has not been entirely correct. Oligotypus 
Text figure 1. Drawing of Typus durhami , n. sp. (holotype), fore and 
hind wings. Sc, subcosta; Rs, radiust; R2, R3, Rl+5, branches of radial 
sector; MA, anterior media; CuP, posterior cubitus; Sn, subnodal vein. 
differs from Paralogus only in minor details: the wing is somewhat 
more slender, and the branches of MA and iA arise as a series of 
irregular veinlets, instead of distinct branches as in Paralogus. The 
following review of the structure of Paralogus strengthens my con- 
viction that it and Oligotypus belong to the same family. 
Explanation of Plate 11 
Photograph of Typus durhami, n. sp. (holotype) X 11/10. 
