Tryonia 1. Catalog of the chiton types of the Academy of Natural Sciences of Philadelphia. G. M. Davis, R. Robertson, M. Miller. 1979, 66 pp. $13.00. 2. Early references to the figures in the Conchylien cabinet of Martini and Chemnitz: volumes I-XII. C. L. Richardson, R. T. Abbott, G. M. Davis. 1979. 2 parts, 427pp, 432 pls. $120.00 3. Helicidae: Catalog of species. C. L. Richardson. 2 parts, 697 pp. $90.00 4. List of shell-bearing mollusks observed and collected at Lizard Island, Great Barrier Reef, Australia. R. Robertson. 1981. 32 pp. $9.00. 5. Catalog of the types of neontological mollusca of the Academy of Natural Sciences of Philadelphia. Pt. 2, Gastropoda: Archaeogastropoda: Pleurotomariacea, Fissurellacea, Patellacea. R. Robertson et al. 1981. 48pp. $11.00 6. Helminthoglyptidae: Catalog of species. C. L. Richardson. 1982. 117pp. $20.00 7. Catalog of the types of neontological mollusca of the Academy of Natural Sciences of Philadelphia. Pt. 3, Gastropoda: Archaeogastropoda, Trochacea, Trochidae, Stomatellidae. R. Robertson et al. 1983. 90pp. $16.00. 8. Characters, character states and taxa used in multivariate analysis of the Pholadacea. K. E. Hoagland. 1983. 51pp. $12.00. 9. Bradybaenidae : Catalog of species. C. L. Richardson. 1983. 253pp. $36.00. 10. Oreohelicidae: Catalog of species. C. L. Richardson. 1984. 30pp. $9.00. 11. List of new and revised recent taxa in the North American terrestrial Mollusca (north of Mexico) published since 19 March 1948. Part 1. W. B. Miller et al. 1984. 14pp. $7.00. 12. Camaenidae: Catalog of species. C. L. Richardson. 13. Polygyracea: Catalog of species. C. L. Richardson. 14. Catalog of the types of recent mollusca of the Academy of Natural Sciences of Philadelphia. Pt. 4, Gastropoda: Archaeogastropoda, Trochacea (concluded), Neritacea (sensu lato). R. Robertson et al. 1986. 153pp. $24.00. 15. Catalog of the types of recent mollusca of the Academy of Natural Sciences of Philadelphia. Pt. 5, Gastropoda: Archaegastropoda, Cyclophoracea. Robert Robertson et al. 1987. 140pp. $22.00. 16. Streptaxacea: Catalog of species. 1. Streptaxidae. C. L. Richardson. 1988. 326pp. $45.00. 17. The development of geological studies in the Grand Canyon. Earle E. Spamer. 1989. 87pp. $16.00. 18. Streptaxacea: Catalog of species. Part 2, Ammonitellidae, Chlamydephoridae, Haplotrematidae, Rhytididae, Systrophiidae. C. L. Richardson. 1989. 154pp. $24.00. 19. Partulidae: Catalog of species. C. L. Richardson. 1990. 96pp. $17.00. 20. Constantine Samuel Rafinesque Schmaltz on classification: a translation of early works by Rafinesque with introduction and notes. A. J. Cain. 1990. 240pp. Hardbound $50.00; softbound $35.00. 21. Corbicula (Bivalvia, Corbiculidae). Part 1: Catalog of fossil and Recent nominal species. Part 2: A compendium of zoogeographic records of North America and Hawaii, 1924-1984. C. L. Counts III. 1991. 134pp. $22.00. 22. Urocoptidae: Catalog of species. C. L. Richardson. 1991. 245pp. $36.00. 23. Catalog of the types of neontological mollusca of the Academy of Natural Sciences of Philadelphia. Pt. 6, Gastropoda: Mesogastropoda: Viviparacea, Valvatacea, Littorinacea, Rissoacea (Pt. 1, Adeorbidae, Amnicolidae, Anabathridae, Assimineidae, Barleeidae, Bithyniidae, Caecidae, Cingulopsidae, Elachisinidae, Falsicingulidae). C. L. Richardson et al. 1991. 243pp. $36.00. 24. Catalog of the types of neontological mollusca of the Academy of Natural Sciences of Philadelphia. Pt. 7, Cephalopoda and Scaphopoda. E. E. Spamer, A. E. Bogan. 1992. 24pp. $9.00. 25. Cerionidae: Catalog of species. C. L. Richardson. 1992. 121pp. $20.00. 26. General Invertebrates collection of the Academy of Natural Sciences of Philadelphia. Part 1: Guide to the General Invertebrates collection. Part 2: Annotated catalog of Recent type specimens: Protozoa, Porifera, Cnidaria, Platyhelminthes, Rotifera, Nemata, Nematomorpha, Annelida, Arthropoda (Merostomata, Pycnogonida and Crustacea), Brachiopoda and Echinodermata. E. E. Spamer, A. E. Bogan. 1992. 305 pp. $45.00. 27. Bulimulacea: Catalog of species. Amphibulimidae, Anadromidae, Grangerellidae, Odontostomidae, Orthalicidae. C. L. Richardson. 1993. 164pp. $25.00. 28. Bulimulidae: Catalog of species. C. L. Richardson. 1995. 458pp. $60.00. Feb. 11, 2009.