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CONTENTS. 



XVII. — Notes oh Cerawus pleurexanthemus, Given. By C D. 

 Walcott, 



XVIII. — Description of the Interior Surface of the Dorsal Shell 

 of Ceraurus pleurexanthemus. By C. D. Walcott 

 (with plate) 



XIX.— Description of a New Species of Jay of the Genus Cya- 

 rioeitta; also of a supposed New Species of the 

 Genus Cyauocorax. By Gkorob N. LaWRBNCK, . . 



XX.— Gn the Genitalia, Jaw. and Lingual Dentition of certain 

 species of Pulinonata. By W. (i Binnky. (With a 

 note on the Classification of the Achatinellse, by 

 Thomas Bland) (with plates), 



XXI. — Notes on certain Terrestrial Mollusks, with description 

 of a new species of the Genus Amphibuliina. By 

 Thomas Bland, 



XXII. — Some Additional Light on the so-called Sterna Port- 

 landica, Ridgway. By Wm. Bhewstek, .... 



XXIII. Index to the Literature of Manganese', 1506-1874. By H. 

 Carrington Bolton, 



151 



15!) 



103 



1G6 



197 



201 



208 



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