MolluscaBase taxon details
original description
(of Hapalus quadrasi Möllendorff, 1893) Quadras, J. F. & Möllendorf, O. F. von. (1893). Diagnoses specierum novarum ex parte septentrionali insulae Luzon. <em>Nachrichtsblatt der Deutschen Malakozoologischen Gesellschaft.</em> 25(11-12): 169 - 184., available online at https://www.biodiversitylibrary.org/page/15601348
page(s): 177 [details]
basis of record
Pilsbry, H. A. (1906-1907). Manual of conchology, structural and systematic, with illustrations of the species, Second series: Pulmonata. Vol. 18. Achatinidae: Stenogyrinae and Coeliaxinae. Conchological Department, Academy of Natural Sciences,Philadelphia. 357 pp., available online at https://www.biodiversitylibrary.org/page/1099785
page(s): 69 [details]