" 19. S. degenis.
Medium, 1.10 by .45; costae, wider than interspaces, 52; cream-white mottled with pale yellow-brown, pale brown within. Harvest Key, occurring very scatteringly on palms, bushes and rocks. 34. Plate 4. Figs. 6, 7." (Maynard and Clapp in Maynard, 1920d:120-121)