Discovery reports (1964) Discovery reports discoveryreports32inst Year: 1964 DESCRIPTION OF THE SPECIES 9 Muscle fibres. Mean number 29-4± 1-4 for M. IV, based on forty-eight specimens. See pp. 15- 21 for explanation. Alimentary canal. Compact, oval nucleus. Stolon. Proceeds forward, turning left at about the level of M. Ill, to proceed back emerging from the test in front of the nucleus. Length. Up to 45 mm.

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