. Bulletin - United States National Museum. Science. vol. 2, pt. 2.] A TAXONOMIC STUDY OF THE SALPIDAE METCALF. 65 strands of the atrial sphincters, which are so close together that they seem to form a broad band continuous over both lips of the atrial aperture. The fibers of this atrial sphincter are less closely approxi- '.19. â¢â¢-â Vr â 'â â¢â¢â =â¢â :â VIS ::- â â â â . w us. zi i FlG. 37.âiiiTTERIA HEXAGONA, SOLITARY FORM, ATRIAL MUSCLES, VIEWED FROM THE LEFT SIDE. X5 DIAMETERS. (DRAWN BY HOYT S. HOPKINS.) mated than are those composing one of the body muscles, the fibers not actuall
. Bulletin - United States National Museum. Science. vol. 2, pt. 2.] A TAXONOMIC STUDY OF THE SALPIDAE METCALF. 65 strands of the atrial sphincters, which are so close together that they seem to form a broad band continuous over both lips of the atrial aperture. The fibers of this atrial sphincter are less closely approxi- '.19. â¢â¢-â Vr â 'â â¢â¢â =â¢â :â VIS ::- â â â â . w us. zi i FlG. 37.âiiiTTERIA HEXAGONA, SOLITARY FORM, ATRIAL MUSCLES, VIEWED FROM THE LEFT SIDE. X5 DIAMETERS. (DRAWN BY HOYT S. HOPKINS.) mated than are those composing one of the body muscles, the fibers not actually touching side by side in the former while they do in the Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States National Museum; Smithsonian Institution; United States. Dept. of the Interior. Washington : Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off.
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