Page:American Seashells (1954).djvu/542

444 Genus Solen Linne 1758 Similar to Ensis, but with only a single tooth at the end of each valve. Solen sicarius Gould Blunt Jackknife Clam Plate 29V British Columbia to Lower California. 2 to 4 inches in length, 4 times as long as wide. Exterior with a varnish- like, olive to greenish periostracum. Moderately common in certain local- ities, especially sandy mud flats. Also dredged in 25 fathoms. Solen viridis Say Green Jackknife Clam Plate 3011 Rhode Island to northern Florida and the Gulf States. About 2 inches in length, about 4 times as long as wide; dorsal edge straight, ventral edge curved. Hinge with a single projecting tooth at the very end of the valve. Color white; periostracum thin, varnish-like, light greenish or brownish. Moderately common in shallow-water sand flats. Solen rosaceiis Carpenter Rosy Jackknife Clam Santa Barbara, California, to A4azatlan, A^exico. I to 3 inches in length, almost 5 times as long as wide. Shell fragile, with a thin, glossy, olive periostracum. Beachworm specimens are whitish with rosy stains inside and out. It is more cylindrical, the anterior extremity is more rounded and narrower than in sicarius. An abundant species along the sandy shores of bays. Also to 25 fathoms. Genus Solecurtus Blainville 1825 Quadrate to rectangular in shape; gaping at both ends. With weak, "clapboard" sculpturing. Ligament prominent, external and posterior to the small beaks. Right valve with 2 strong, horizontally jutting cardinal teeth just under the centrally located beaks. Left valve with i cardinal. Fsavt- mosolen Risso 1826 is a synonym. Solecurtus cutningianus Dunker Corrugated Razor Clam North Carolina to south half of Florida to Texas. I to 2 inches in length with characters of the genus. Color all white, with a dull, yellowish-gray periostracum. Outer surface sculptured with