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Figure 1.Arhynchite hayaoi sp. n., found at the type locality, with the proboscis extending toward the right.

Figure 2.Arhynchite hayaoi sp. n., paratype (NSMT-Ec 104). A internal morphology of the anterior end of the trunk, dorsal view; an asterisk indicates the position of the gonostome B gonostome and gonostomal lip, magnified C internal morphology of the posterior end of the trunk, dorsal view. Abbreviations: ac alimentary canal; av anal vesicle; cg ciliated groove; cr crop; dv dorsal vessel; e esophagus; g gonoduct; gl gonostomal lip; gs gonostome; gz gizzard; im interbasal muscle; nv neurointestinal vessel; ph pharynx; pp papillae; vn ventral nerve cord; vss ventral setal sac; vv ventral vessel. Scales: A and C 5 mm; B 1 mm.

Echiurid Worm proboscis

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

In this view of the same individual as above taken a few seconds later, a wave of peristalsis can be seen traveling along the body.

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

Equiuro, Ochetostoma edaxMar de Cortés

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

Urechis caupo, about 20 cm long, in an artificial burrow in Monterey Bay Aquarium. The head is to the top right. (Photo by: Dave Cowles, August 2010 )

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

Echiurid Worm proboscis

Echiurid Worm proboscis

Echiurid Worm proboscis