238 



unless at the commencement or apex, where they are 

 vertical or radiating ; their surface convex, strongly gro- 

 nulated and glistening. Aberdeen 0,04.... 004. 



GENUS. ROTALIA. 



Orbicular, spiral, convex or conoid above, flattened, ra- 

 diated, and tuberculated beneath, multilocular ; 

 aperture marginal, triangular. 



R. BECCARIA. F. p, 232.Macg.Aber.p.36. 

 NAUTILUS B. Mont. p. 186. t. 18. /. 4. Turt. 

 D.p. [19. Dor. Cat. t.\9.f. 2&.Walk.f. 63. 

 D. p. 342. Transparent, white or covered with ahrown 

 skin, convex on one side and flat on the other ; spires 

 four or five, twisted, with ten joints in the first which 

 are deeply grooved ; aperture oboval Reversed var. 

 (NAUT. PERVERsus.JFata./. 64. Mont. p. 187. t. 

 18. f. 6.) Minute. Wey mouth, Margate, fyc. in 

 sand. 



R. INFLATA. F. p. 232. NAUTILUS 1 . Mont. Sup 

 p. Sl.t. 18./.3. Turt,D. p. 120. Brown, opaque, 

 with three volutions ; in the first are three joints which 

 are exceedingly tumid and rounded, and so deeply divi- 

 ded as to appear like lobes; the aperture somewhat 

 globular. Minute, In fine sand. 



