. Bulletin of the Natural History Museum Zoology. . Fig. 66 Yoldiella inconspicua africana. Lateral view from the right side of the internal morphology of a specimen from Sta. 85326 Cape Verde Basin. (Scale = mm). For identification of parts see Fig. 12. visceral ganglia are 'club'-shaped, the visceral being the larger. The ovoid pedal ganglia lie central in the foot, just dorsal and anterior to the byssal gland. A large statocyst lies dorsal to each pedal ganglion. The mouth is set posterior to the anterior adductor muscle. The oesophagus is relatively narrow while the stomach is large wi
. Bulletin of the Natural History Museum Zoology. . Fig. 66 Yoldiella inconspicua africana. Lateral view from the right side of the internal morphology of a specimen from Sta. 85326 Cape Verde Basin. (Scale = mm). For identification of parts see Fig. 12. visceral ganglia are 'club'-shaped, the visceral being the larger. The ovoid pedal ganglia lie central in the foot, just dorsal and anterior to the byssal gland. A large statocyst lies dorsal to each pedal ganglion. The mouth is set posterior to the anterior adductor muscle. The oesophagus is relatively narrow while the stomach is large with a small style sac which does not penetrate the foot. The duct of the right digestive diverticulum passes dorsally around the hind gut to join the stomach close to the oesoph- ageal aperture. One of the two left diverticula opens ventral to the gastric tooth while the second opens adjacent to that from the right. No ingested material was observed in the diverticula. From the style sac, the hind gut passes between the pedal ganglia and the byssal gland before turning dor- sally. It makes a very small flexure on the left side immedi- ately before crossing to the right side at the dorsal limit of the body posterior to the ligament. On the right side of the body the hind gut makes a broad sweeping loop as far as the posterior face of the anterior adductor before passing dorsally and posteriorly to the anus. The gonads overlie the posterior, dorsal and dorso-lateral sides of the viscera and extend antero-dorsally with part lying centrally between the digestive diverticula. The kidney is small in comparison to the other species of Yoldiella described here, extending no further than the posterior edge of stomach. The heart is relatively large. This subspecies differs from Y. inconspicua in having a more elongate outline and a more pointed posterior shell margin. The dorsal margin is slightly more convex, the height/length ratio is slightly greater. The hind gut differs slightly
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