VI CONTENTS. 



Page 

 Art. XXIX. Wanderings and Ponderings of an Insect Hunter . . 305 

 Art. XXX. British Species of the Dipterous Trihe Sphaeroceridae. 



By A. H. Haliday, M.A 315 



Art. XXXI. Portions of a Letter from the Author of the Letters of 



Rusticus to Edward Newman 336 



Art. XXXII. On the Species of Teleas, &c. By Francis Walker . 341 

 Art. XXXIII. Of the Double Metamorphosis in Macropodia Pha- 



langium, or Spider-Crab ; with Proofs of the Larvae being Zoea in 



Gegarcinus hydrodomus, Thelphusa erythropus, Eriphia carribasa, 



and Grapsus pelagicus. By J. V. Thompson, F.L.S. Deputy 



Inspector-General of Hospitals 370 



Art. XXXIV. Notes on various Insects. By Ionicus 376 



Art. XXXV. On the Origin of the Entozoa in the Bodies of Animals. 



By Henry Metford, M.R.C.S 379 



Art. XXXVI. Notes on the Genus Aphis. By Francis Walker . 405 



Art. XXXVII. Varieties 407 



Art. XXXVIII. Travels through North and South Carolina, Georgia, 



East and West Florida, &c. By William Bartram 417 



Art. XXXIX. Appendix to Captain Sir John Ross's Narrative of 



his Second Voyage, &c 427 



Art. XL. On the Husk, or Hoose in Cattle. By George Colgate 433 

 Art. XLI. An Epitome of the British Genera, in the Order Thy- 



sanoptera, with indications of a few of the Species. By A. H. 



Haliday, M.A 439 



Art. XLII. Natural History and Metamorphosis of an Anomalous 



Crustaceous Parasite of Carcinus Maenas, the Sacculina Carcini. 



By J. V.Thompson, F.L.S. Deputy Inspector-General of Hospitals 452 

 Art. XLIII. Extracts of Letters from C. Darwin, Esq. to Professor 



Henslow 457 



Art. XLIV. Notes on various Insects. By Ionicus 460 



Art. XLV. Monographia Chalciditum. By Francis Walker . . . 465 

 Art. XLVI. A few Observations on the Habits of some Species of 



Bees. By G. R. Waterhouse, Curator to the Museum of the 



Royal Institution, Liverpool 496 



Art. XLVII. Entomological Notes. By Edward Newman . . . 499 

 Art. XLVIII. Notes on the Cheese and Bacon-Hoppers, and the 



Cheese-Mite 501 



Art. XLIX. List of Entomological Works 505 



Art. L. Varieties 510 



List of Subscribers of Five Copies of this Volume, to whom ive 

 return our most sincere thanks. 

 W. Bennett. S. Hanson. 



J. BEVINGTON. J. HOYER. 



Rev. C. S. Bird. J. Milne. 



J. S. BOWERBANK. E. NEWMAN. 



J. F. Christy. G. Newman. 



A. H. Davis. W. Swainson. 



E. Doubleday. J. J. Walton. 



