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Show 1875.] GUATEMALAN LAND-SHELLS. 649 22. MEGALOMASTOMA (TOMOCYCLOS) SIMULACRUM, Morelet. Hab. Coban, Vera Paz. 23. CHONDROPOMA RUBICUNDUM, Morelet. Hab. Coban, Vera Paz. 24. HELICINA VERNALIS, Morelet. Hab. Coban, Vera Paz. 25. HELICINA ROSTRATA, Morelet (salvini, Tristram). Hab. Coban, Vera Paz. 26. HELICINA AMCENA, Pfr. Hab. Coban, Vera Paz, 27. HELICINA TROSULA, Morelet, var. Hab. Vicinity of the city of Guatemala. 28. HELICINA ANOZONA, sp. n. Testa globosa, spiratim subtiliter striata, nitida, carneo-flavescens, zona suturali pallide flava insignis; spira conoidea, acutius-cula ; anfractibus 5, convexiusculis, ultimus subinflatus, antice non descendens ; apertura parum obliqua, late semiovalis,- columella brevis, subrecta, tuberculo terminata ; peristoma incras-satum, latiusculum, reflexum, leete luteum; callus basalis circumscripta, mediocris, ci'assus. Diam. maj. 8, min. 7, alt. 7, apert. alt. 5, lat. 3| millim. Hab. Vicinity of Coban. Central America (Salvin). Similar to H. fulva, D'Orb, from Bolivia, and to H. rotunda, D'Orb, from the West Indies; the first is more flattened, of larger size, and differently coloured; the latter has no spiral sculpture, and a much thinner peristome. 29. SCHASICHILA PANNUCEA, Morelet. Hab. Coban, Vera Paz. Freshwater Shells. 30. PHYSA NITENS, Phil. From a small stream running into the lake of Duenas above Santiago, Zamora. 31st Aug. 1873. 31. PLANORBIS TENUIS, Phil. Hab. Duenas. 32. \MPULLARIA FASCIATA (Lam.), Reeve. Hab. Coban, Vera Paz. |