. Breviora. 1957 NEW OCTOCHAETINE EARTHWORM with attenuate, often spirally twisted, tip. Distal seventh of shaft, including tip, sculptured on sides and both faces. Sculp- ture (Fig. B), of interrupted rows of fine teeth that become slightly longer and fewer per group toward the apex of the shaft. Setae a and h of both xvii and xix alike, except that the tip of the & setae may be more strongly twisted. An apparently mature, unworn seta is mm. long (disregarding curvature), mm. wide and (being rectangular in section) mm. ;. Penial setae of Bamiella americana. A. Came
. Breviora. 1957 NEW OCTOCHAETINE EARTHWORM with attenuate, often spirally twisted, tip. Distal seventh of shaft, including tip, sculptured on sides and both faces. Sculp- ture (Fig. B), of interrupted rows of fine teeth that become slightly longer and fewer per group toward the apex of the shaft. Setae a and h of both xvii and xix alike, except that the tip of the & setae may be more strongly twisted. An apparently mature, unworn seta is mm. long (disregarding curvature), mm. wide and (being rectangular in section) mm. ;. Penial setae of Bamiella americana. A. Camera lucida drawing of an entire seta. Arrow indicates location of detail shown in B. B. Detail of edge of blade of same seta, showing character of sculpture (More highly magnified.) C. Face view of distal portion of a fc seta from segment xix (sculpture omitted). Drawings by Mrs. Dorothy McKey-Fender. Spermathecae adiverticulate, ca. 5 mm. long, a band of con- nective tissue passing from each duct to the septum just in front. Ampulla narrowing somewhat entally, with several annu- lar constrictions externally, ridging of inner wall and large lumen. Duct ca. li mm. long, thicker than ampulla but asym- metrical, somewhat and gradually narrowed in parietes, lumen slit-like, wall thick, muscular. Seminal chambers, seven or eight on the bulged side, one or two smaller on the other side, com-. 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 Harvard University. Museum of Comparative Zoology. Cambridge, Mass. , Museum of Comparative Zoology, Harvard University
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