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

 under the command of Sir James Clark Ross, R.N., F.RS., during 

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

 the Admiralty. Edited hy Jonx RicnARDSox, M.D., F.RS., &c., and 

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



The undersigned begs to announce that, having purchased the remaining 

 stock of the ahove, including a considerable number of unpublished 

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

 Department of the British Museum., achicA'^ed its completion, he is now- 

 prepared to supply the concluding portions of this important Zoological 

 Work. 



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

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



Part XX. — CRUSTACEA. By Edt^ard J. IMiers, Junior Assistant, 

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



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

 Department, Britisli ^luseum. Four Plates. Price 10s. 



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

 F.L.S., F.Z.S., &c., of the Zoological Department, British J\luseum. 

 Eight Coloured Plates. Price 10s. 



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

 Gray, Ph. D., F.R.S., F.L.S., itc. Five Coloured and Nine Plaiji 

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



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

 i^LA., M.D., Ph. D., F.R.S., V.P.Z.S., Keeper of the Zoological 

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

 tents of Vol. 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, I\LD.,*F.R.S., &c Sixty Plates. 

 Price £3 3s. 



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



INSECTS. — By Adam Vhite, ]\I.E.S.,and Arthur Gardiner Butler, 

 F.L.S., F.Z.S., &c. Ten Plates. Price 21s. 



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

 Price 10s. 



Catalogue of the Lcpidoptora 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.C. 



