U. S. NATIONAL MUSEUM 



BULLETIN 192 PLATE 12 





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1, Chondropoma (Chondrot'oma) montalbense, new .si)ecie.s; 2, C. (6.) catalinensc, new 

 species; 3, C. (C) vanattac '•anattae Pilsbry; 4, C (C) tortiicjacnsc, new species; 5. 

 r. ((".) vanattac vcrcttcnsc, new subspecies; 6, C (C) xohiiu. new s|)ecies; 7, C (C) 

 iiiolciisc, new species; S, C (C) browin'aiunii AWinlanil. 



