TWO NEW INSECTS FROM THE PERMIAN OF TEXAS. 



The specimens submitted to me by Professor Case consist of two 

 detached front wings of cockroaches; two species being represented by the 

 two specimens. The insects are preserved in a thin stratum of impure 

 limestone. This limestone, according to Professor Case, lies directly upon 

 a blue-clay stratum in which is found conifers and some fresh-water forms, 

 probably Estheria. The two specimens derive an added interest from the 

 fact that they are the first insects obtained from the Texas Permian. The 

 character of the limestone in which they are preserved is not unlike that 

 from which insects have been obtained in the Kansas Permian,* and it 

 may be confidently expected that additional material will ultimately be 

 obtained from the Texas deposits. The genus Etoblattina to which the two 

 species are provisionally referred is common both to the Upper Coal Mea- 

 sures and to the Permian. The two species are new. 



Fig. 52. — Wings of fossil cockroaches. 



A. Etoblattina texana sp. nov. 



B. Etoblattina permiana Sellards. A specimen from the Per- 



mian of Kansas, inserted for comparison. 



C. Etoblattina (?) robusta sp. nov. 



The line beneath each wing indicates three-fourths the breadth 

 of wing measured across anal area. 



Etoblattina texana sp. nov. (Text fig. 52 a.) 



Small cockroaches. Tegmina slender, almost three times^ as long as 

 broad. Subcostal area short. Radial area strongly developed, its branches 

 occupying a part of the apex of the wing. The radius divides first near the 

 termination of the basal fifth of the wing. The upper branch gives off 



• Sellards: Amer. Journ. Sci., vol. xvi, pp. 323-324, 1903; vol. xxii, pp. 249-258, 1906; vol. xxiii, pp. 345- 

 3SSi '907: vol. xxvii, pp. 151-173. «909> 



IS I 



