TRIGONIA 1 0 1 6 TRITON 20 1 5 6 TROCHITA 3 0 4 0 TROCHUS 16 1 0 6 TUGONIA 1 0 1 6 TURBINELLA 13 0 16 6 TURBO 13 0 16 6 TURRITELLA 11 0 14 0 UMBRELLA 1 0 1 6 VENUS 26 1 13 0 VERTAGUS 5 0 6 6 VITRINA 10 0 13 0 VOLUTA 22 1 8 0 VULSELLA 2 0 3 0 ZIZYPHINUS 8 0 10 6 -------------- CONCHOLOGIA SYSTEMATICA; or, Complete System of Conchology. By LOVELL REEVE, F.L.S. Demy 4to, 2 vols. pp. 537, 300 Plates, £8. 8_s_. coloured. Of this work only a few copies remain. It is a useful companion to the collector of shells, on account of the very large number of specimens figured, as many as six plates being devoted in some instances to the illustration of a single genus. INSECTS. ------- CURTIS’ BRITISH ENTOMOLOGY. Illustrations and Descriptions of the Genera of Insects found in Great Britain and Ireland, containing Coloured Figures, from nature, of the most rare and beautiful species, and, in many instances, upon the plants on which they are found. Royal 8vo, 8 vols., 770 Plates, coloured, £21. Or in separate Monographs. Orders. Plates. £. _s_. _d_. APHANIPTERA 2 0 2 0 COLEOPTERA 256 8 0 0 DERMAPTERA 1 0 1 0 DICTYOPTERA 1 0 1 0 DIPTERA 103 3 5 0 HEMIPTERA 32 1 1 0 HOMOPTERA 21 0 14 0 HYMENOPTERA 125 4 0 0 LEPIDOPTERA 193 6 0 0 NEUROPTERA 13 0 9 0 OMALOPTERA 6 0 4 6 ORTHOPTERA 5 0 4 0 STREPSIPTERA 3 0 2 6 TRICHOPTERA 9 0 6 6 ‘Curtis’ Entomology,’ which Cuvier pronounced to have “reached the ultimatum of perfection,” is still the standard work on the Genera of British Insects. The Figures executed by the author himself, with wonderful minuteness and accuracy, have never been surpassed, even if equalled. The price at which the work was originally published was £43. 16_s_. --------------