> as lemmas

1849 G. Huxley in Proc. Zool. Soc. 31 The mantle-lobes [of Trigonia] are rounded and plaited.

1855 W. S. Dallas in Syst. Nat. Hist. I. 430 The mantle lobes are free all round.

1961 J. Stubblefield Davies's Introd. Palaeontol. (ed. 3) i. 6 There arise a pair of muscular sheets which form a lining to the two valves, and by which the valves are in fact secreted: these are called the mantle-lobes.

1994 E. E. Ruppert & R. D. Barnes Invertebr. Zool. (ed. 6) xix. 1032/1 The shell is secreted by the underlying dorsal and ventral mantle lobes.