374 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
Glandina glabra Pfeiffer. Plate 53, fig. 9. 
Achatina ( Glandina ) glabra Pfeiffer, Symb. Hel., in, 1846, p. 90. 
Shell thin, smooth, shining, light corneous, with distant reddish strigations which fade out on 
the body whorl; whorls 8; suture distinct, finely crenulately margined; outer margin of the aperture 
not incurved in the middle. 
Length, 28; diameter, 12 mm. 
Under rocks in pastures, Bayamon, Porto Rico. One broken specimen. 
Family I'IRCINARIILE. 
Genas CIRCINARIA Beck, 1837. 
Shell thin, widely umbilicated, depressed, striate or wrinkled, generally uniform in color; whorls 
4 to 5, the last broad, moderately deflexed in front; peristome slightly thickened. 
Type, Helix con cava Say. 
Circinaria concolor Ferussac. Plate 54, figs. 8, 10. 
Helix concolor Ferussac, Hist. Nat. Moll. Terr., 208, pi. 82, fig. 2, 1821. 
Shell widely umbilicated, subdiscoidal, smooth, dark chocolate brown, feebly strigate with lighter 
brown; suture linear; whorls 4, rapidly increasing, the last obliquely depressed above; base convex. 
Diameter, 22; height, 9 mm. 
Bayamon, Porto Rico. 
Holopoda. 
Family STENOGYRHDE. 
This group is frequently called Achaiinidx. 
Genus LEPTINARIA Beck, 1837. 
Leptinaria antillarum Shuttleworth. 
Leptinaria antillarum Shuttleworth, Diagn. neue Moll. Berner Mitth., 1854, p. 50 (unfigured). 
Humacao, Porto Rico (Crosse); Tortola, Guadeloupe. 
Leptinaria stylodon Shuttleworth. 
Leptinaria stylodon Shuttleworth, Diagn., neue Moll. Berner Mitth., 1854, p. 50 (unfigured). 
Humacao, Porto Rico (Crosse). 
Leptinaria opalescens Shuttleworth. 
Leptinaria opalescens Shuttleworth, Diagn. neue Moll. Berner Mitth., 1854, p. 50. 
San Juan; Ceiba; Humacao, Porto Rico (Crosse). 
Genus STENOGYRA Shuttleworth, 1854. 
Small, elongated, translucent, many whorled, shells with an obtuse summit and simple peristome; 
mostly oviparous, laying very large eggs for the size of the shell. 
Stenogyra terebraster Lamarck. 
Bulimus terebraster Lamarck, An. sans Vert., Vi, p. 124, 1822; Lister, Hist., pi. 20, fig. 15? 
Porto Rico, numerous localities (Crosse); Cuba. 
Stenogyra swiftiana, Pfeiffer. 
Bulimus swiftiaims Pfeiffer, Monog. He!,, m, p. 399, 1853; Conch. Ca,b. Bulimus, pi. 69, figs. 9-11. 
Porto Rico, many localities; Vieques (Crosse); St. Thomas. 
Genus OPEAS Albers, 1850. 
Opeas subula Pfeiffer. 
Achatina subtda Pfeiffer, Arch, fiir Naturg., i, 1839, p. 352. 
Stenogyra subula Binney, Man. Am. L. Shells, p. 425, fig. 473, 1885. 
San Juan; Fajardo, Porto Rico (Crosse); Santo Domingo; Cuba; Jamaica; Barbados; Antigua; 
St. John; St. Thomas; Mexico; Alabama; Cochin China. 
