The Zoology of the Voyage of H.M.S. Erebus and Terror, 

 under the command of Sm James Clark Ross, R.N., F.E.S., during 

 the years 1839-1843. By authority of the Lords Commissioners of 

 the Admiralty. Edited by John Richardson, M.D., F.E,S,, &c., and 

 John Edward Gray, Esq., Ph. D., F.R.S., 



The undersigned begs to announce that, having purchased the remnining 

 stock of the above, including a considerable number of unpublished 

 Plates, and, by the kind co-operation of the Officers of the Zoological 

 Department of the British Museum, achieved its completion, he is now 

 prepared to supply the concluding portions of this important Zoological 

 Work. 



Part XIX. — INSECTS (conclusion). By Arthur Gardiner 

 Butler, F.L.S., F.Z.S., &c. Four Plates. Price 10s. 



Part XX. — CRUSTACEA. By Edt/ard J. Miers, Junior Assistant, 

 Zoological Department, British Museum. Four Plates. Price 10s. 



Part XXI.— MOLLUSCA. By Edgar A. Smith, F.Z.S., Zoological 

 Department, British iluseum. Four Plates. Price 10s. 



Part XXII. — BIRDS (conclusion). By R. Bowdler SnAnrE, 

 F.L.S., F.Z.S., &c., of the Zoological Department, British IMuseum. 

 Eight Coloured Plates. Price 10s. 



Part XXIII.— MAMMALIA (conclusion). By John Edward 

 Gray, Pn. D., F.R.S., F.L.S., &c. Five Coloured and Is^'ine Plain 

 Plates. Title and Contents of Vol. I. Price 10s. 



Part XXIV. — REPTILES (conclusion). By Albert GiJNTnEii, 

 M,A., ILJ)., Ph. D., F.R.S., V.P.Z.S., Keeper of the Zoological 

 Department of the Britisli Museum. Ten Plates. Title and Con- 

 tents of ^'ol. XL Price 10s. 



The following sections, each complete, with distinct pagination and Title- 

 page, may be had separately. 



BIRDS. — By George Robert Gray, F.R.S., and R. Bowdler Sharpe, 

 F.L.S., &c. Thirty-seven Coloured Plates. Price £3 3s. 



FISHES.— By John Richardson, M.D., F.R.S., &c. Sixty Plates. 



Price £3 Ss. 

 CRUSTACEA.— By Edward J. IMiers. Four Plates. Price 10s. 



INSECTS. — By Adam White, IM.E.S., and Arthur Gardiner Butler, 

 F.L.S., F.Z.S., &c. Ten Plates. Price 31s. 



MOLLUSCA.— By Edgar A. Smith, F.Z.S., &c. Four Plates. 

 Price 10 s. 



Catalogue of the Lepidoptera of New Zealand, By Arthur 

 Gardiner Butler, F.L.S., F.Z.S., &c. Three Plates, Price 7s. 6d. 



E. W. JANSON, 35, LITTLE RUSSELL STREET, LONDON, W.O. 



