. Bulletin. Science; Natural history; Natural history. 42 SOUTHERN CALIFORNIA ACADEMY OF SCIENCES. Fig. 3. Frontal and lateral views of abdominal hooded uncinus. Thoracic setigers all biramous and strongly biannulate, with deep intrasegmen- tal furrows from which pointed, bilimbate setae emerge; thorax blunt, broadest about setiger 5: setigers 10 and 11 tapering abruptly to narrow waist (Fig. 1). First abdominal setiger biannulate. wider than last thoracic setiger; notopodial fascicle slightly more dorsal than thoracic notopodia: notosetae all pointed and bilimbate; neurosetae mixed, dorsal se
. Bulletin. Science; Natural history; Natural history. 42 SOUTHERN CALIFORNIA ACADEMY OF SCIENCES. Fig. 3. Frontal and lateral views of abdominal hooded uncinus. Thoracic setigers all biramous and strongly biannulate, with deep intrasegmen- tal furrows from which pointed, bilimbate setae emerge; thorax blunt, broadest about setiger 5: setigers 10 and 11 tapering abruptly to narrow waist (Fig. 1). First abdominal setiger biannulate. wider than last thoracic setiger; notopodial fascicle slightly more dorsal than thoracic notopodia: notosetae all pointed and bilimbate; neurosetae mixed, dorsal setae in fascicle bilimbate. ventral setae hooded rostrate uncini; each uncinus with slender subdistally expanded shaft; large fang surmounted by crest of four to five subapical teeth in a row. and about 10 small apical teeth in variable arrangement; hood short with smooth edge (Fig. 2). Dorsal wall of median and posterior abdominal segments thin; gut contents readily visible; ventrum of each abdominal segment muscular, bearing large neu- ropodial torus on its posterio-lateral half; small notosetal fascicle seated on in- distinct torus, separated from neuropodium by projecting nephridial pore; noto- podia well separated medially; all abdominal setae rostrate uncini. except for first abdominal setiger. Eversible branchiae complexly palmate, occurring in posterior abdominal se- tigers only; branchiae inserted at posterio-dorsal corners of neuropodial tori (Fig. 3). The pygidium is missing from the holotype. Remarks.—The first abdominal neuropodium of D. oraiia may bear all capillary setae, all rostrate uncini. or a mixture of both. A single specimen bears capillary setae in the second abdominal notopodium also. The last thoracic capillary setae usually point posteriad. those of the first abdominal setiger usually are directed. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of t
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