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CONTENTS OF VOL. IV. 



[SEVENTH SERIES.] 



NUMBER XIX. 



Page 



I. On new Species of Histeridce, and Notices of others. By 



G. Lewis, F.L.S 1 



II. Rhynchotal Notes. — Heteroptera : Scutellerince and Orapho- 

 somince. By W. L. Distant 29 



III. Description of a new Gemis and some new Species of Fos- 

 sorial Hymeuoptera from the Oriental Zoological Region. By 



•^. Camebon 62 



IV. The Larval Stage of Hypoderma bovis. By P. Koorevaak, 

 Veterinary Surgeon to the Amsterdam Public Abattoir 69 



New Book:— l^he Penycuik Experiments. By J. C. Ewart, M.D., 

 F.R.S., Regius Professor of Natural History, University of 

 Edinburgh 74 



On Ecdysis in Insects, considered as a means of Defence against 

 Animal or Vegetable Parasites. — Special Roles of the Tracheal 

 and Intestinal Ecdyses, by J. Kiinckel d'Herculais 



NUMBER XX. 



V. Notes on the Mollusca of the Arabian Sea, Persian Gulf, and 

 Gulf of Oman, mostly dredged by Mr. F. W. Townsend, with 

 Descriptions of Twenty-seven Species. By James Cosmo Melvill, 

 M.A., F.L.S., &c. (Plates I. & 11.) 81 



VI. Observations on the Classification of Birds. By Dr. R. W. 

 Shufeldt 101 



