THE BARNACLES IN THE U. S. NATIONAL MUSEUM. 5 



bo prior to Polliciyes. The supposed new genus Vcmcheri.a was bjised 

 on tlie scutum of Mltdla jxiUieipes^ whieh wjis thouo-ht to l»e the 

 internal shell of a slug. 



The few species of Mitella are littoral barnacles, often extremely 

 abundant. The eastern American shores are without species; but one 

 occurs on the west coast. 



MITELLA POLLICIPES (Gmelin). 



1790. Lcpas 2)oUicipesGuFAA^, Sj'st. Nat., loth ed., p. 321o (in ]\rari Meditorraneo). 

 1790. Lepas gallorum Spengi.ejj, Rkrifter Naturhigt. Selskabet, I, \A. vi, fig. 9. 

 1824. Pollicipes conmcopUt Leach, Encycl. Brit., Supj)!. Ill, and of D.akwin, 



Monograph on the Cirripedia, 1851, p. 298, pL vii, fig. 1, and snbsequent 



authors. 

 1904. Vaucheria tingitana Pall.\ry, Journ. de Conchyliologie, LII, p. 7, pi. iii, 



figs. 2, 3, 4. 



Localities.— ^o. 13008, U.S.N.M., France, Thos. Wilson. No. 12377, 

 Gulf of Gascony, J. Gw3'n Jeffreys collection. No. 12392, Biarritz, 

 "eatable and sold in the market," Jeffreys collection. He Dieu, Ocean, 

 Isaac Lea collection. 



MITELLA POLYMERUS (Sowerby). 



1833. Pollicipes^ pohjments Sowerby, Proc. Zool. 8oc. Lond., p. 74 (coa.st of 



California) . 

 18.51. Pollicipes polymeruf! Sowerhy, DarNvin, Monograpli on the Cirripedia, p. 307, 



pi. VII, fig. 2. 



Localities. — Plover Bay, near Bering- Strait, Siberia, associated with 

 Conchoderma atiritum and Coronrda diadeina^ ow a humpback whale 

 {Megaptera liersahilis Cope), taken b}' Captain Redtield, W. H. Dall, 

 Western Union Telegraph Expedition, 1865. No. 6609, Tledoo vil- 

 lage, near Susk, British Columbia, James G. Swan. No. 32889, 

 Barclay Sound, British Columbia, Albatross. No. 9203, Neah Bav, 

 Washington, James G. Swan. Mouth of Columbia River, Raymond. 

 No. 32883, "Upper California," T. Nuttall, as J\ mortovi Conrad. 

 Isaac Lea collection. No. 32887, Drakes Bay, California, Albatross. 

 No. 3083, Wilmington, California, D. S. Jordan. No. 32890, Mon- 

 terey Bay, W. H. Dall. No. 1114.5, Santa Rosa Island, California, 

 P. Schumacher. Nos. 2547, 11152 (and 28510?), San Diego, Califor- 

 nia, C. R. Orcutt, O. N. Sanford, and Edgar A. Mearns, U. S. Arm}'. 

 No. 32888, San Quentin Bay. Lower California. No. 32882, Rosario, 

 Lower California. 



This common species of the west coast is readily known by the numer- 

 ous irregularly arranged scales at the base of the capitulum. The 

 valves are usually much worn, and the peduncle is covered with very 

 line scales. Dr. W. II. Dall took specimens from a humpback whale 

 in liering Sea, the highest latitude known for a member of tiiis geiuis. 

 These speciuKMis I at Hrst thought were M. pollicipes., as they have 

 lost many of the lower plates, perhaps by the solvent action of the 

 preservative. (Eig. 1^1.) 



