12 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 73 



OPINION 94 



Twenty-Two Mollusk and Tunicate Names Placed in the 

 Official List of Generic Names 



Summary. — The following names are hereby placed in the Of&cial List of 

 Generic Names: Mollusca : Anodonta, Argonauta, Buccinum, Calyptraea, 

 Columbella, Dcntalium, Helix, Limax, Mactra, Mya, Mylilus, Ostrca, Physa, 

 Sepia, Sphaerhim, Succinea, Teredo. Tunicata : Botryllns, Clavelina, Diazona, 

 Distaplia, MoJgiila. 



Statement of case. — In Circular Letter No. 78, March, 1924, the 

 Secretary submitted 39 generic names which had been proposed by 

 Commissioner Apstein (1915a, pp. 181-184) as " nomina conser- 

 vanda." These names were studied independently, especially by Dr. 

 Bartsch of the United States National Museum and by Mr. B. B. 

 Woodward of London, England. Several other specialists were also 

 kind enough to consider the names, and the bibliographic references 

 were checked in the Secretary's office. It appears from the reports 

 reaching the Secretary's office that of these, 22 names are valid under 

 the International Rules and that, therefore, they do not have to be 

 adopted as " nomina conservanda " under " Suspension of the Rules." 



Considerable correspondence has reached the Secretary in regard to 

 the names. 



Discussion. — In regard to 22 of the names no objection of any kind 

 has reached the Secretary. In regard to 17 of the names, objection 

 of one kind or another has reached the Secretary and these 17 cases 

 are tabled without prejudice for consideration at the next meeting 

 of the Commission. 



The following 22 names have not been objected to, and on this 

 account and on basis of reports by specialists the vSecretary recom- 

 mends their inclusion in the Official List of Generic Names subject 

 of course to the usual conditions : 



Anodonta Lam., 1799, 87, mt. Mytiliis cygncns Linn., 1758a, 706. 



Argonauta L., I7s8a, 708, type A. argo L., 1758a, 708. 



Botryllus Gaert., 1774, 35, type Alcyoniuni schlosseri Pallas, 1766, 355, s. 



Botryllns stcUatus. 

 Buccintim L., 1758a, 734, type D. undatuui L., 1758a, 740. 

 Calyptraea Lam., 1799, 78, mt. Patella chincnsis L., 1758a, 781. 

 Clavelina Savig., 1816, 171, type Ascidia lepadiformis Miiller, 1776a, 226. 

 Columbella Lam., 1799, 70, mt. Valuta mercatoria L., 1758a, 730. 

 Dentalium L., 1758a, 785, type D. elephantinum L., 1758a, 785. 

 Diazona ,Savig., i8r6, 35, tod. D. violacea Savig., 1816, 35. 



