PROCEEDINGS OF THE NATIONAL MUSEUM. 



322 



,";:i;;;;;;;;7f;^Ht^^ ^" ^^i^^^^^^ qualified suc- 



cessor in line drawing. The figures in the present paper are chiefly 

 enlarged photographs, retouched with careful reference to the speci- 

 „uMi With the exception of the microscopically fine stnation, which 

 ,,>uld in most cases only be indicated on a much larger figure than 

 those given here, it is believed that the figures are exceptionally accu- 

 rate and complete. , i .. j ■ f 



The compilation of a card catalogue of the described species of 

 Pvramidellidffi has shown that the number is much greater than the 

 cnnpilers imagined l.efore undertaking the work; and also that apart 

 from errors of identification, the specific names used for many of these 

 species have often been repeatedly used, in some cases three or four 

 times over, and of course it has become necessary to replace the pre- 

 occupied name in each case by one not previously used m the genus 

 This will account for the number of new names for old species which 

 occur in the present paper. 



The senior author desires to say that his part in this paper has been 

 of an advisory and editorial nature, and that the labor of comparisons, 

 of preparing the diagnoses and comments, and practically the entire 

 text, except the introduction, has been borne by the junior author, to 

 whom the appreciation due on this account should be fully accorded. 



The types, except where otherwise stated, have been returned to the 

 Berlin Museum, where they may be consulted by students. 



DESCRIPTIONS OF THE SPECIES. 



PYRAMIDELLA (LONGCHAEUS) BICOLOR Menke. 



Piiramidella hicolor MK^iKK, Malak. Bliitt., I, 1854, p. 28. 



Two specimens from the Pa?tel collection labeled Oheliscu.^ ncJJs A. 

 Adams, Japan, are al)solutely identical with specimens of P. h! color 

 Menke, in our collection from Guacomayo, Mexico, and we firmly 

 believe that the locality cited by Pastel is wrong. 



PYRAMIDELLA (PHARCIDELLA) HASTATA A. Adams. 



OInlixrnx haxtains A. Adams, in Sowerby Thes., 1854, p. 811, No. 24. 



'l^v(> shells labeled Pijmnudella jndcJwIla Dunker, new species (a 

 manuscript name), are in the Dunker collection. There is no locality 

 liil)i>l with them. The shells are in every way identical with specimens 

 in our collection of P. hastatm Adams, from Acapulco, Mexico. 



