7()<) 



PROi'EEDINaS OF THE NATION AJ. MUSEUM. 



vol.. XXIX. 



J} 



Fl(i. o2.— OKYCTOBLATTINA AMERICANA. 



ORYCTOBLATTINA AMERICANA, new species. 



Locality. — Wills C'reek, near Steubenville, Ohio. Coiiemaiig-h for- 

 mation ; shales above the Ames limestone. 



A front winji- of 19 mm. length. Similar to Oryctohlattina laqnenta 



Scudder. Radial sector with 4 nearly 

 parallel branches extending in an 

 almost straight course to the apical 

 margin. Media free and independent, 

 divided below the middle of the wing 

 into 3 forked branches. Cubitus con- 

 sisting of ^1 long stems, which send 

 out numerous oblique offshoots to the 

 inner margin. Subcosta and radius 

 with similar branchlets directed to the anterior l)order. Anal area 

 rather small, with few slightly curved veins. Intercalary venation 

 unfortunately not well preserved. 



JIoloty2)e.—C2ii. No. 38647, U.S.N.M. 



ORYCTOBLATTINA LATIPENNIS, new species. 



Locality. — Wills Creek, near Steubenville, Ohio. Couemaugh 

 formation; shales a))ove the Ames limestone. 



A fragment 11 nun. long, from the base 

 of a long, proportionally broad wing about 

 LS mm. in length. .The space above the sul)- 

 costa is tilled up with oblique veins, and the 

 wide space ])etween the subcosta and the 

 radius l\y rather regular cross veins. Radial 

 sector with only a few distant branches. 

 Media free, first furcating below the middle. 

 Cubitus dichotomous, with many oblique 

 veinlets stretching backward. 



All interspaces are filled up with straight or undulating cross-veins. 



ILolotype.—C?ii. No. 38656, U.S.N.M. 



BLATTINOPSIS Giebel. 



Germar's Blattbui retlcalata is to be regarded as the type of this 

 genus. Above the origin of the radial sector, there spring forth 

 proximally from the radius from 1 to 2 longitudinal veins, which 

 most probably belong to the media. 



BLATTINOPSIS ANTHRACINA, new species. 



Locality. — Wills Creek, near Steubenville, Ohio. Conemaugh for- 

 mation; shales above the Ames limestone. 



Length of the front wing- about 17 mm. Costal border strongh^ 

 arcuate. Costal area broad. Subcosta does not extend far beyond 



Fig. 38.— oryctublattina lati- 



PENNIS. 



