CONTENTS OF VOL. IV 



[FIFTH SERIES.] 



NUMBER XDt. 



Page 



I. Description of new or little-known Species of Maioid Crus- 

 tacea (Oxyrbyncha) in the Collection of the British Museum. By 

 Edward J. Meers, F.L.S., F.Z.S., Assistant in the Zoological 

 Department. (Plates IV. & V.) 1 



II. Notes on the Palaeozoic Bivalved Eutoniostraca. No. XII. 

 Some Carboniferous Species belonging to the Genus C'arbonia, Jones. 

 Bv Prof. T. Rupert Jones, F.R.S., and James W. Kirkby, Esq. 

 (Plates II. & III.) 28 



III. On a small Collection of Arachnida from the Island of 

 Johanna, with Note on a Homopterous Insect from the same Loca- 

 lity. By Arthur G. Butler, F.L.S., F.Z.S., &c. (Plate I.) 41 



IV. On Plocamia plena, a new species of Echinonematous Sponge. 



By W. J. Sollas, M.A., F.G.S., &c. (Plates VI. & VII.) 44 



V. On the Occurrence in North America of rare Extinct Verte- 

 brates found fragmentarily in England. — No. 2. By Prof. R. 

 Owen, C.B., F.R.S., &c. (Plate VIII.) 53 



VI. Studies on Fossil Sponges. — V. Calcispongiee. By Karl 

 Alfred Zittel 61 



VII. Observations on the Chlamydoderce or Bower-birds, with 

 Description of a new Species. By John Gould, F.R.S 73 



VIII. A third Contribution to the Knowledge of the Cetoniidce of 

 scar. By Charles O. Waterhouse 74 



IX. On. some Spheroidal Lithistid Spongida from the Upper Silu- 

 rian Formation of New Brunswick. Bv Prof. P. Martin Duncan, 

 F.R.S. (Plate IX.) 84 



