110 NEW- YORK FAUNA MOLLUSCA. 



GENUS CINGULA. Fleming. 



Shell small, thin, elongated, of several whorls. Aperture small, entire ; the lips continuous 

 posteriorly. Opercle horny, subspiral. 



ClNGULA MINUTA. 



PLATE IV. FIG. 117. 



(STATE COLLECTION.) 



Turbo minutus. Totten, Am. Jour, of Sci. Vol. 26, p. 369, pi. fig. 6, A. B. 

 T. id. Russel, Essex Jour. Nat. Hist. Vol. 1, p. 73. 



T. id. Godld, Invertebrata of Mass, p. 265, fig. 171. 



Description. Shell minute, conic, thin, polished, elevated to an obtuse apex. Whorls five, 

 convex, with very fine transverse striae. Suture distinct, with a rounded shoulder on the whorl. 

 Aperture oval, entire, rounded at the base, very slightly angular above : lip sharp ; lower 

 portion of the pillar-lip slightly recurved, with a loosely attached enamel, which rises before 

 an umbilical pit. Opercle horny, subspiral. 



Color. Yellowish brown, usually coated with a dark green pigment. Animal dusky brown : 

 tentacle, and a line on each side of the neck, light drab. 



Length, 0-1 -0-15. Width, 0-05. 



This minute species was first detected by Col. Totten of the U. S. Engineers, at Rhode- 

 Island. Along the coast of Massachusetts, it occurs on seaweed and other marine plants. 



ClNGULA ACULEUS. 



PLATE VI. FIG. 115. 

 (STATE COLLECTION.) 



Cingula aculeus. Gould, Invertebrata of Mass. p. 266, fig. 172. 



Description. Shell minute, subcylindrical, elongated, fragile. Whorls six, very convex, 

 with a deep suture. Surface with numerous revolving equidistant microscopic lines, with 

 traces of vertical folds on the upper whorls. Aperture suboval, oblique, one-fourth the length 

 of the shell : margin entire, and slightly turned over the umbilicus ; the revolving lines seen 

 through the interior of the outer lip. Opercle horny. 



Color. Epidermis thick, and of a light yellow straw-color ; beneath horn-color. 



Length, 0*2; of aperture, 0"05. 



This was sent to me several years ago, from the northern coast, by Mr. Couthouy, as an 

 undescribed Pyramis ? I then referred it to Turbo, under an appropriate subgenus. Since 

 that period, Dr. Gould has arranged it in its present place. It will probably be found in our 

 waters. 



