NOTES ON JAPANESE, INDOPACIFIC, AND AMERICAN 

 PYRAMIDELLID^. 



By William Healey Dall, 



Curator, Division of Mollmks, 



AND 



Paul Bartsch, 



Assistant Curator, Division of MoUusks. 



JIm^ setter ng™ater,al for the monograph of Pacific coast Pyra- 

 midel ,d» on wh.ch the authors of the present paper have been for 

 some time engaged application for material for study was made to the 

 Komgl,che Zoolog.sehe Museum in Berlin, where the types of many 

 of the species treated of in the second edition of the Conchylien 

 uabmet were known to be preserved. 



Through the kind intervention of the late Prof. Dr. Eduard von 

 Martens, in charge of the conehological collection of the Berlin Museum 

 the entire series of their Pyramidellid*, including numerous types' 

 was lent to the U. S. National Museum for study^ This series con 

 tamed material fi-om many sources, of which the most important were 

 the collections of the late Henry and Arthur Adams, of Pastel of 

 Dunker, and Hilgendorf. Numerous specimens of species inade- 

 quately described by Arthur Adams from Japan were among the most 

 valuable tor our work, and the importance of accurately figuring and 

 : adequately dcsc.ribing them was evident, as, until such descriptions 

 were made pubhc, no small number of species of the Japanese fauna 

 must remain doubtful. 



Though mostly small and to many students uninteresting, the Pyra- 

 midellida^^ exist in much larger numbers than is generally realized 

 lo obtain a satisfactory view of their specific characters, in most 

 cases the species must be studied under the microscope, and to get 

 accurate figures of these minute creatures enlarged photographs or 

 camera lucida drawings are essential. The difficultv of obtainino- these 

 in the present instance was much enhanced bv the death of ou" chief 

 draftsman and faithful collaborator, the latc^ Dr. J. C. McConnell, for 



Proceedings U. S. National Museum, Vol. XXX-No. 1452. 

 Proc. N. M. vol. XXX— 06 21 3.,, 



