710 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. XXIX. 



EUC^^NUS Scudder. 

 EUCiENUS OVALIS Scudder. 

 EuarnuH ovalis Soidder, Mem. Boston Soc. , III, 1885, j). 825, pi. xxix, lig. 4. 

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

 Kittanniiig":; (Alleghen}^) stage. 

 Two of these specimens show a distinct ovipositor. 

 Scudder regarded this insect, also, as a nenropteroid form and 

 placed it in the homothetids. 



Holotyp€.—i^2X. Nos. 88142, 38810, 38820, U.S.N.M. 



EUCffi^NUS MAZONUS Melander. 



Enaenus mazomia Melander, Jour. Geo!., XI, 1908, p. 188, pi. vi, fig. 8; pi. vii, 

 fig. 10. 



Locality. — Mazon Creek, near Morris, Illinois. Penns3dvanian; 

 Kittanning-^ (Allegheny) stage. 



EUC-<ENUS ATTENUATUS Melander. 



Eucsenfati atfenudtiig Melander, .lour. Geol., XI, 1903, p. 188, pi. vi, fig. 4; pi. vii, 

 fig. 11. 



Locality.- — Mazon Creek, near Morris, Illinois. Penns3dvanian; 

 Kittanning? (Allegheny) stage. 



The IT. S. National Miiseimi possesses one example (No. 38828), 

 which without doubt belongs to this species. This specimen shows 

 us that the part which Melander took for a head pertains to the pro- 

 thorax. A second poorly preserv^ed example (No. 38827) exhibits 

 distinctl}' preserved gonapophyses, which stand out in the form of a 

 short ovipositor. 



EUCiENUS ROTUNDATUS, new species. 



" Neuropteroid. Fam. HoriwtJietidx" Scudder, Mem. Boston Soc, III, 1885, 

 pi. XXIX, fig. 9. 



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



Kittanning ? (Allegheny) stage. 

 A front wing of about 32 

 nnu. in length and 15 mm. in 

 breadth. The costal area at- 

 tains scarcely two-thirds the 

 ** length of the wing and is very 

 broad. The radius iirst divides 

 below the middle of the wing 

 and forms but a few branches, 

 as does the media. More than 

 half the breadth of the wing is tilled up by the numerous offshoots of 

 the cubitus, which are mainly furcate. 



ILolotyp,'. —The original bears the Cat. No. 38153, U.8.N.M., and 

 the label '"'cf. Acr/dit'tes jrriscus Andree." 



PlO. 30.— EUCjENUS ROTUNDATUS. 



