No access restrictions Many of SIA's holdings are located off-site, and advance notice is recommended to consult a collection. Please email the SIA Reference Team at osiaref@si.edu
Houbrick, Richard S. 1979. Reproductive Biology of Modulus modulus Linnaeus, 1758 (Prosobranchia: Cerithiacea). Bulletin of the American Malacological Union, Inc., : 10
Houbrick, Richard S. 1981. Reapparaisal of the Gastropod Genus Varicopeza Grundel (Cerithiidae: Prosobranchia). Proceedings of the Biological Society of Washington, 93(3): 525-535.
Houbrick, Richard S. 1979. "Reproductive Biology of Modulus modulus Linnaeus, 1758 (Prosobranchia: Cerithiacea)." Bulletin of the American Malacological Union, Inc., 10.
Houbrick, Richard S. 1981. "Reapparaisal of the Gastropod Genus Varicopeza Grundel (Cerithiidae: Prosobranchia)." Proceedings of the Biological Society of Washington, 93, (3) 525–535.
Houbrick, Richard S. 1984. "A new "Metula" species from the Indo West Pacific (Prosobranchia: Buccinidae)." Proceedings of the Biological Society of Washington, (2) 420–424.
Houbrick, Richard S. 1987. "Transfer of Cerithiopsis crystallina Dall to the genus Varicopeza Gründel, Family Cerithiidae (Prosobranchia: Gastropoda)." Nautilus, (2) 80–85.
Houbrick, Richard S. 1992. "Anatomy and preliminary generic review of the Bittium group." American Malacological Union and Western Society of Malacologists, Univ.of California, Berkeley, 30 June - 5 July 1991.Western Society of Malacolog, 24 27.