ABT. 22 



NEW LAND SHELLS FROM MEXICO BARTSCH 



EXPLANATION OF PLATE 



Fig. 1. Holospira (Holospira) monclovana B. 



2. Holospira (Holospira) monclovana, showing internal lamellation. 



3. Holospira {Eudislemma) picta B., showing internal lamellation. 



4. Holospira {Eudislemma) picta. 



5. Holospira (Holospira) orcutti B. 



6. Holospira (Holospira) orcutti, showing internal lamellation. 



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