< 



vm CONTENTS. 



Page 

 LXIII. Rrachiopod Nomenclature : the Genotype of yereftra^Mte. 

 By S. S. BucKMAN, P.G.S. (Plate XII.) 525 



LXIV. Descriptions and Records of Bees. — XIV. By T. U. A. 

 CocKKRELL, University of Colorado 531 



l\e\c Books : — The Crawfishes of the State of Pennsylvania. By 

 1)t. a. E. Ortmaxn. — A Natural History of the British 

 Butterflies, their World-wide Variation and Geographical 

 Distribution. A Textbook for Students and Collectors. By 

 J. W. TuTT, F.E.S. Vol. 1 540, 542 



Index 543 



PLATES IN VOL. XIX. 



Entozoa of British marine fishes. 



Hymenosoma depressum. 

 Mollusca from South Africa. 



VII I 



■ > MoUusk-infesting Trematodes. 



■ > New species of shells. 



■A. I 



XI. Phreatogammarus propinquus, sp. u. 

 XII. Terebratula terebratula (Linn6). 



