118 AMERICAN JOURNAL 



Cpr., Sup. Rep. Br. Assoc. 1864, p. 636. Suess, Wohns. 



i, p. 20, 1859. 

 Terehratella pulvinata, Cpr., Check List West Coast Shells, 



June, 1860. 

 Waldheimia pulvinata, Cooper, Geog. Cat. p. 3, No. 4, 1867. 



Hob. Orange Harbor Tierra del Fuego. " Oregon" U. S. Ex- 

 ploring Exp. Smithsonian Cabinet (type) 5963, 17,813 (part). 



On examining the apophyses of the type, which opened widely 

 enough for this to be readily done, it was at once evident that 

 this species is a typical Terehratella. 



With regard to the habitat an error has been perpetuated. 



Among the specimens of W. venosa, Sol., known to be from 

 Orange Harbor, Patagonia, were two evidently belonging to the 

 genus Terehratella. 



One of them was attached hy its pedwicle to a specimen of the 

 Waldheimia. The other was free. At first, as no other recent 

 species was found to agree with it, it was supposed to be unde- 

 scribed ; but, on comparing it with the (heretofore) unique type 

 of T. jjulvinata, their identity was at once evident. 



The Orange Harbor specimens agreed in every particular, 

 except that the type was a little more dusky in color. The 

 foramen, general form, apophyses, and punctate structure Avere 

 precisely similar. One was a little larger and the other a little 

 smaller than the type. 



Dr. Carpenter, in his Report (1863) to the British Association, 

 tabulates it from Puget Sound on the authority of Expl. Ex. and 

 Kennerly. The remark in the text below — " 80 fms. living. 

 Cooper, Catalina Ids." — on the authority of Dr. Cooper refers 

 to the T. califomica, the next following species in the text, and 

 not to T. pulvinata. Dr. Kennerly's specimens are not to be 

 found, and I am inclined to believe that they might have been 

 the smooth variety of caurina, or worn valves of some other 

 species, perhaps coreanica. 



At any rate, the only definite locality which we have for this 

 species is Orange Harbor, and it is improbable that the same 

 species occurs in both Patagonia and Oregon. Tlie habitat as- 

 signed by Dr. Cooper in his Geog. Cat. of "Puget Sound to 

 Arctic Sea" is gratuitous, as no specimens have been obtained 

 from north of Puget Sound, and, as the foregoing remarks indi- 

 cate, probably none north of Patagonia, 



This species is only distinguishable from young W. venosa by the 

 apophyses. I have been unable to detect any constant external 

 differences. 



There are no specimens of this species in the collections known 



