 | Charles Thorpe - 1844 - 346 páginas
...inequilateral, convex, not thick, yellowish horn colour, regularly striated transversely, one side truncated, the other produced in a straight line to a rather...not central, tumid and prominent, without curvature. 0,60. ..0,80 Common. * * Lateral teeth smooth. M. STULTORUM. Lin. 1126. — D. p. 138.— Pen. 4. p.... | |
 | Sylvanus Charles T. Hanley - 1856 - 540 páginas
...convex, whitish or yellowish horn colour, with regular coarse transverse striae; one side truncated, the other produced in a straight line to a rather acute point; beaks tumid, prominent without curvature; lateral teeth striated. f..1.—England. M. AUSTRALIS. Sow. in... | |
| |
W. t. 6. /. 23.—Flem. p. 427. Ovaltriangular, inequilateral, convex, whitish or yellowish horn colour, with regular coarse transverse striae ; one side truncated, the other produced in a straight line to a rather acute point ; beaks tumid, prominent... 