28 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 73 



Other reports as under Cerion. 



On behalf of the Commission, the Secretary wishes to express 

 appreciation of the cooperation which the above mentioned con- 

 sultants have given in connection with this case. 



In respect to the name Ncriiina, the following recommendation by 

 the Secretary is to be interpreted as applying to its generic status, in 

 case Neritina is accepted as generically distinct from Theodoxus, but 

 to its subgeneric status in case it is accepted only as subgenerically 

 distinct. 



In view of the pronounced differences of opinion which have de- 

 veloped in the cases of Ainpullaria, Atmcula, Bithynia, Cyclostoma, 

 Artcmon, and Cochlicopa, report is postponed until the next meeting 

 of the Commission. 



In view of the foregoing premises and discussion, the Secretary 

 recommends that the Commission adopt as its Opinion the following : 



Summary. — The following six generic names of MOLLUSCA are 

 hereby placed in the Official List of Generic Names, with types as 

 stated: Cerion (uva), Oleacina (voluta), Neritina {pitlligera), 

 Clausilia (rugosa), Vitrina (pelliieida), Toriiatellina (clansa). 



Opinion prepared by Stiles. 



Opinion concurred in by ten (lo) Commissioners: Apstein, 

 Bather, Chapman, Dabbene, Horvath, Ishikawa, Jordan (K.), Sil- 

 vestri. Stiles, Warren. 



Opinion dissented from by no Commissioner. 



Not voting, eight (8) Commissioners: Bolivar, Handlirsch, Har- 

 tert, Jordan (D. S.), Kolbe, Neveu-Lemaire, Stejneger, Stone. 



