Siphonosoma cf. vastum

Silva-Morales, Itzahí & Gómez-Vásquez, Julio D., 2021, First records and two new species of sipunculans (Sipuncula) from the Southern Mexican Pacific, European Journal of Taxonomy 740 (1), pp. 77-117 : 117

Siphonosoma cf. vastum

in this paper: Fig. 4A–H (San Agustín Bay, Huatulco, Oaxaca, Mexico, between rock and sand, 3 m).

Figures

Fig. 4. Siphonosoma cf. vastum (Selenka & Bülow in Selenka, 1883) from Oaxaca, Mexico. A. External morphology. B. Internal morphology. C. Introvert papillae. D. Posterior introvert papillae. E. Trunk wall from the median region of the trunk. F. Multiple rectal caeca. G. Hook. H. Longitudinal muscle bands. Abbreviations: A = anus; DRM = dorsal retractor muscles; I = intestine; LMB = longitudinal muscle bands; MRC = multiple rectal caeca; N = nephridium; VRM = ventral retractor muscles.