Page:American Seashells (1954).djvu/355

Rh Siibjainily BORSONIINAE Shell biconic or fusiform in shape; sinus on the shoulder, poorly devel- oped. Operculum present or absent. Radula with 2 slender marginals. Shell usually with columella plications. Genus Gymnobela Verrill 1884 Gymnobela blakeana Dall Blake's Turret Figure 57h North Carolina to the Lower Florida Keys. 34 inch in length. Sinus barely discernible. Shell thin but strong. Color translucent-white or chalky-white. Nuclear w^horls distinct, without strong sculpturing and light-brown in color. Uncommon from 70 to 140 fathoms. Genus Mitromorpha P. P. Carpenter 1865 Mitromorpha filosa Carpenter Filose Turret Figure 57I Monterey, California, to the Gulf of Cahf ornia. % inch in length, solid, light orange-brown in color. Spiral cords may be slightly beaded in some specimens. Uncommon offshore. Mitromorpha aspera Carpenter Beaded Turret Figure 57111 Monterey, California, to the Gulf of California. % inch in length, strongly beaded and somewhat cancellate, with a glossy finish and light orange-brown in color. Moderately common off- shore. Subfamily DAPHNELLINAE Shell fusiform or ovate, canal short. Operculum absent. Sinus adjoin- ing the suture. The protoconch has diagonally cancellate sculpturing. Radula with 2 slender, curved marginals only. Genus Daphnella Hinds 1844 Daphnella lymneiformis Kiener Volute Turret Southeast Florida and the West Indies. Vs to y2 inch in length; resembles a miniature, elongate Scaphella volute- shell. With about 8 whorls, the nuclear ones smoothish, the next 4 with