NO. 1441. AMERICAN PALEOZOIC INSECTS— IIANDLIRSCH. 



708 



GERARUS DANIELSI, new species. 



Locality. — Mazon Creek, near Morris, Illinois. Pennsylvanian; 

 Kittanning? (Alleghen}') .stage. 



Obverse and reverse of a niagniticently preserved example, in which, 

 however, the wings again unfortiinateh^ lie over one another. With 

 the exception of the anteriox- margin, the front wing has only mere 

 traces left, so that the vena- 

 tion of the hind wing, at least, 

 can be more clearly made out. 



The accompanying figure 

 shows on the right side the 

 well-detined marginal costa, 

 then the subcosta ending in 

 the costa above the apex, 

 the simple radius, the radial 

 sector arising near the basal 

 attachment of the wing, and 

 having 5 simple or (on the left) 

 compound branches, then the 

 man3'-times branched media, 

 and finally the cubitus, with 

 its abridged oti'shoots con- 

 tinidng* downward toward the 

 anal furrow. In the evidently 

 plaited anal fan, a num))er of 

 straight veins are to ))e seen 

 diverging nidially. Cross , 



veins appear to have been abundantly developed, but are not sharply 

 defined. The abdomen was shorter than the wings, and moderately 

 stout; the prothorax large, almost saddle-shaped, and not broader than 

 long, rugose and always fui-nished with 2 spinelike processes on the 

 sides. A longer process lying in front of the prothorax may pertain 

 to a part of the head. 



Daniels collection. Plastotype and reverse of holotype in the U. S. 

 National Museum: Cat. Nos. 25928, 35574. 



GERARUS MAZONUS Scudder. 



Ger(trus7nuzoiin.'< Sciudeh, Mem. Boston Soc, III, 1885, p. 344, pi. xxxu, tig. 7. 

 Lorf/j;ti/.—^Miv/An\ Creek, near Morris, Illinois. Pennsylvanian: 

 Xittanning? (Allegheny) stage. 



GERARUS ANGUSTUS, new species. 



Localiti/.—MayAm Creek, near Morris, Illinois. Pennsylvanian: 

 Kittanning? (Allegheny) stage. 

 Proc. X. M. vol. xxix— 05 19 



Fig. 30.— GERARUS danielsi. 



