. 1 MERICAN PA LEOZOIC INSECTS—HANDLIBSCH. 677 



biickwiird. To all a])peanuu'e the cubitus had an isolated, lono-, sim- 

 ple superior branch and a forked inferior brancii, l)oth arcuate and 

 directed backward. Anal veins also curved and stretchnig- posteriorly. 

 A.nal area neither detined nor anipl(\ Cross veins probably simple 

 and straio-ht, irreg-ularly distributed, and not reticulate. 



HOMOTHETUS Scudder. 

 HOMOTHETUS FOSSILIS Scudder. 



Sci'DDEK, Devon. In.st'cts, N. l\., 1S()5, p 1. 



HniiKAliCtus fossilif! Sciddek, Caiiad. Nat. (2), III, 1S<)7, \> 205, pi. iii; Anniv. 



Mem. Boston Soc, 1880, ]>. 17, j)l. i, figs. 1,2. 

 HomofhdH.'^ foxs,/ 1. ^ Rages, Bull. Mas. Conip. Zool., VIII, 1881, \>. 278. 



Locality. — 8t. dohn. New Brunswick. Little River group; = 

 ? Pottsviile. 



According to Scudder, the Homothetida^ unite the genuine neurop- 

 teres with the pseudoneuropteres, an assumption for which the pres- 

 ent fossil, however, ofiers very little support. Hagen and Biauer 

 considered Iloniofhetxs a sialid; Brongniart, on the contrary, an 

 ephemerid. Personally I have nodoul)t that this form also belongs to 

 the true Pahtodictyoptera. 



Family HEOLID.E, new family. 



1 here class an American form, which in the structure of the wing 

 diU'ers sutiiciently from the European homoioptends, so that tiie exist- 

 ence of essential differences in the structure of the l)ody can be also 

 inferred. 



In form the wing is more elongated and pointed, with gently arcuate 

 costal l)order and uniform!}' rounded inner margin. The anal portion 

 is not broadened. The branches of the radial sector advance far out 

 to the apex, and those of the cubitus as well as of the anal veins con- 

 tinue in gentle curves to the posterior margin. The cross veins are 

 delicate, widely separated, and occasionally branched. 



HEOLUS, new genus. 



Wing pointed, its costal margin sHghtly curved and its inner border 

 strongly and uniformly arched, about three times as k)ng as ])road. 

 Costal area running out to a point and moderately wide. The sub- 

 costa attains three-fourths the length of the wing- and fuses in the 

 costa. Radius simple, reaching to the apex and not far removed from 

 the subcosta. The radial sector originates in about one-third the 

 length of the wing and diverges widely from the radius; its tirst 

 branch arises (juite a distance back of the center of the wing, and is 

 divided into 4 twigs; the 4 following simple l)ranchesare parallel with 

 each other and directed obli(|uely l)ackward. The superior brancli of 



