386 U.S. NATIONAL MUSEUM BULLETIN 221 



dipper ever examined by me, and one must suppose that the descriptions 

 were drawn up from memory, which would account for these and other 

 serious discrepancies. 



The chief putative differences between Cinclus Mortoni and C. Townsendi 

 are the shorter length of the former ("about 5 inches," against "about 7 

 inches") and its shorter tail. No. 2862 is, in the dried skin, about 6V2 

 inches long, while No. 2861 is about 8 inches long; the tail of No. 2862 is 

 a full half inch shorter tlian that of No. 2861 and appears even shorter as 

 a result of its make-up. 



In short, while it can now never be proved, there is reason to believe that 

 these two specimens are the true types of Townsend's two supposedly new 

 dippers. 



It is necessary to point out that the site of "Fort McLoughlin" lay far to 

 the north of the 49th Parallel. Duflot de Mofras (Exploration du Territoire 

 de rOregon, vol. 2, 1844, pp. 146-147) locates it as follows: "En quittant 

 I'entree nord du detroit de Juan Fuca [Queen Charlotte Sound], et en re- 

 montant la cote, on rencontre le cap Circonspection [Cape Caution], au 

 dela duquel apparaissent au large les rochers de la Vierge, petits ilots fort 

 dangereux. Au nord de ces ilots, se trouve I'ile Calvert, la plus sud de 

 Tarchipel de la Princesse Royale. Le fort anglais de Mac Loughlin, ainsi 

 nomme en I'honneur du surintendant, fonde en 1833, est situe dans I'anse 

 de la Loutre, sur I'ile immediatement au-dessus de celle de Calvert . . ." 

 Cinclus townsendi Audubon 



Birds of America (folio), vol. 5, No. 87, pi. 435, fig. 1, 1838. 

 Cinclus Townsendi "(Audubon)" Townsend 



Narrative of a journey across the Rocky Mountains, to the Columbia 



River, Appendix, pp. 333 (in catalogue), 339, April 1839. 

 =Cinclus mexicanus unicolor Bonaparte. See Hellmayr, Catalogue of 



birds of the Americas 7: 106, 1934. 

 2861. Adult (sex not indicated). "N.W. Coast. Oregon." Collected by 



John K. Townsend. Received from Spencer F. Baird, who acquired 



it from John J. Audubon. 

 The oldest label borne by this skin is Baird's; its data are: "Cinclus 

 americanus Sw/2861 J.K.T. N/N.W. Coast. Oregon" ("N" was Baird's 

 symbol for specimens presented him by Audubon) . 



For further comments on tliis bird, see remarks under the preceding form. 



Family TROGLODYTIDAE: Wrens 



Genus CISTOTHORUS Cabanis 



Cistotliorus palustris, var. paludicola Baird 



Review of American birds 1 : 148, September 1864. 

 =CistothoTUs palustris paludicola Baird. See Hellmayr, Catalogue of 

 birds of the Americas 7: 127, 1934. 



