THE NAUTILUS. 93 



the time when the shells, or conchae, were the things collected and 

 studied. Now we are studying mainly the soft parts ; better, the 

 animals, " Malacozoa," and might as well use the proper term. 

 Malacology is a permissible, or excusable, abbreviation of malaco- 

 zoology. 



3. In somewhat the same sense we still are too much accustomed 

 to the word " Shells " used indiscriminately. " Land Shells of 

 North America " or the " Shells of Tennessee " is improper. In the 

 first place we really mean the animals, and in the second there are 

 many snails without any shells. The words " Snails," " Mussels '' 

 and " Slugs " are not objectionable, have been used, and their mean- 

 ing is clearly defined. Restrict the use of " Shell " to what it really 

 means. 



4. In looking over the files, e. g. of the Nautilus, we find scores 

 of heads of articles like, " A New Species of Unionidae." If the 

 name of the species described were the title we would not only at 

 once know what it is, but it would be easier to find a certain article, 

 and registration would be simplified. 



New Philadelphia, Ohio, Sept., 1911. 



NOTE ON A NEW ABBALIOPSIS FBOM JAPAN. 



BY S. S. BERRY, 

 Stanford University, California. 



Preserved among some miscellaneous invertebrates in the Stanford 

 University collections were found specimens of a very distinct and 

 interesting new species of Abraliopsis, with respect to which the fol- 

 lowing notes may be regarded as merely preliminary to a more ex- 

 tended account in a paper now in hand. 



Abraliopsis scintillans, new species. 



Animal small, mantle elongate conical, tapering; fins large, 

 broadly sagittate, well produced posteriorly to an acute point, about 

 two-thirds as long as the body. 



Head large, flattened, with large, prominent eyes. 



Arms moderate, nearly of a length, their relative order 4, 3 = 2, 

 1 (the dorsal arms counting as 1); armed for the most part with 11- 

 12 small alternating hooks, but these give place to two rows of 



