The genera of worms [...]. The genera vermium exemplified by various specimens of the animals contained in the orders of the intestina et mollusca Linnae I. Drawn from nature by James Barbut. Drawn from nature by James Barbut. 2 parts in 1 vol. 4to: [4 incl. engr. title]-xx-ii-101, [2]-xxvii-[1]-76 pp. 25 pl. (some offsetting of engr. title on typogr. title, occ. spotting). - First edition of this study in invertebrate zoology focussing on worms and mollusca. Ill. with 25 pl. engraved by J. Newton after drawings by Barbut, all but the last one hand-coloured. - Ref. Nissen (ZBI) 221.