PLATE XLII. 



IIemiasteb elegans Shumard (p. 88). 

 Geol. Survey Texas. 



Figure la. Upper surface of the test, 

 lb. Lower surface of the test, 

 lc. Lateral surface of the test. 

 Id. Posterior surface of the test, 

 le. Apical system, X 5. 

 If. Portion of anterior ambulacrum, X 5. 

 lg. Same, 

 lh. Portion of interambulacrum, X 5. 



