. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. m. Fig. 3. A. Anterior region of the fore-gut of Nebaliella looking forwards into a piece cut at region A of Fig. 2 to show the relationships of the parts hidden by the median structures, anterior median projection; dorsal channel; dorsal ridge; ' small ridge on dorsal ridge ;^. strong setae; short stiff spines; m. mandible; ow. oesophagus; o«.r. oesophageal ridges. B. Posterior region of the fore-gut and the entrance to the intestine of Nebaliella looking backward
. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. m. Fig. 3. A. Anterior region of the fore-gut of Nebaliella looking forwards into a piece cut at region A of Fig. 2 to show the relationships of the parts hidden by the median structures, anterior median projection; dorsal channel; dorsal ridge; ' small ridge on dorsal ridge ;^. strong setae; short stiff spines; m. mandible; ow. oesophagus; o«.r. oesophageal ridges. B. Posterior region of the fore-gut and the entrance to the intestine of Nebaliella looking backwards from region B of Fig. 2 to show the spatial relations of the pads and the projections thereon in the pyloric part of the gut. digestive glands; /. intestine; lateral pad; median pad; p. long projections; ventral pyloric chamber. II. MID- AND HIND-GUT Besides the dorsal glandular caeca already mentioned, Nebaliella resembles Nebalia in having three digestive gland caeca {) on either side. These unite and open into the ventro-lateral corners of the ventral pyloric chamber {) immediately posterior to the tripartite process. The openings are smaller than those in Nebalia. Ventral glandular caeca were not found. The lumen of the intestine is relatively wider than in Nebalia, and for a considerable distance is roughly triangular, with one angle dorsal and two ventro-lateral, and with walls of highly vacuolated cells. Passing posteriorly the cells become less vacuolated and a striated border appears on them. Then the outline of the gut becomes oval and the striated border deeper. Finally the cross-section. 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 Institute of Oceanographic Sciences (Great Britain); National Institute of Oceanography of Great Britain; Great Britain. Colo
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