"82. S. procliva.
About the size of last, 1.10 by .45; frontal bar thin, but high; costae 19, with wide irregular interspaces; bluish-white, ash-brown within. Goat Key, Great Harbor, scattered over key. 145; many dead. Plate 31, figs. 5, 6." (Maynard and Clapp in Maynard, 1921a:134)