302 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.54. 



in the living Blaberus trapezoideus Burmeister. Venation and shape 

 of tegmen like that of Atimohlatta cwr'y^/?en?^^s Handlirsch ; anal field 

 long; cubitus with five simple veins below; media with three branches 

 above, the middle one forked, the forks of the middle branch and that 

 produced by Ihe last branch leaving the stem both more remote from 

 the apex than in A. curvipennis ; radius not well preserved, but with 

 three branches, more or less divided distally; subcostal venation 

 obliterated. Probably the pronotum described above belongs to this 

 species; its size is such as would be expected. This insect is con- 

 siderably smaller than A. curvipennis, from the "Upper Pottsville " 

 at Scranton, but the structure is scarcely different. 

 Holotijpe.— Cat. No. 64342, U.S.N.M. 



(3) Fragment of an apparently new Blattoid genus, prn,^)ably 

 related to Adelohlatta from Mazon Creek and Mesitohlatta from 

 Commentry. There is not enough to justify a description and name 



(4) Smaller, unrecognizablt^ fragments of Blattoid tegmiiiii 



Fig. 1.— Pronotum of Blattid Fro. 2.— Atimoblatta h oucta R. 



PBOBABLY Atimoblatta re- M.= Media. Cu.=Cubitus. 



DUCTA. 



(B) Humphreys Clay Pit, Port Barnett, one mile east of Brook- 

 ville, Pennsylvania. (Bassler.) In the Brookville Clay horizon 

 10'-15' above Homewood shales. The insects are in shale. All the 

 insects are Blattoids. 



(1) Blattoid tegmen, lacking the apex and anal area. 



PHOBEROBLATTA RETICULATA, new species. 



Plate 54, fig. 4. 



Tegmen about 44 mm. long, the subcosta ending about 24 mm. from 

 base; surface between the veins finely reticulated, as in P. grandis 

 Handlirsch. Costa somewhat less convex than in P. grandis; costal 

 area 4.3 mm ^^^ide at level of first fork of radius; subcosta with a 

 short apical fork, then (counting backward) three oblique branches 

 which have brat-chlets from their upper side (the second with two, 

 the others each with one), then a simple branch, then a branch 

 forked near base, then a few weak strongly diverging branches (no 

 distinct basal division as is described for P. grandis) ; radius with 

 two main divisions, the upper with a small apical fork and two other 

 branches from its upper side, the first (counting backward) with a 

 small apical fork, the second with a very long fork, the upper branch 



