Fullington, R. W. & Zimmerman, E. G. (1977). A new species of Humboldtiana (Helminthoglyptidae) from Coahuila, Mexico. The Veliger. 20(2): 134-136, pl. 1, text-fig. 7.
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Fullington, R. W. & Zimmerman, E. G.
1977
A new species of <i>Humboldtiana</i> (Helminthoglyptidae) from Coahuila, Mexico