Eury"terus, appendages, [150], [236], [237]
Eury"terus, classification, [249]
Eury"terus, comparison with Ammocœtes, [170], [323]
Eury"terus, diagram of sagittal median section, [240], [245]
Eury"terus, endostoma, [241], [306]
Eury"terus, eyes, [275]
Eury"terus, mesosomatic segments, [192]
Eury"terus, muscles of carapace, [269]
Eury"terus, operculum, [150], [190], [212]
Evidence of alimentary canal, innervation, [446]