. Bulletin of the British Museum (Natural History), Geology. J£l. Fig. 37. Benneviaspis salopiensis sp. nov. Imperfect cephalic shield, a, Naso- hypophysial area, much enlarged, b, Longitudinal section through same. The holo- type. Besom Farm Quarry. x 1-5. indicate the same arrangement. The supposed existence of the independent nasal opening in this genus is probably due to the shearing off of the top of the eminence. The left sensory field is faintly indicated and is seen to be narrow with a small postero-medial projection. The ornamentation cannot be made out except around the naso
. Bulletin of the British Museum (Natural History), Geology. J£l. Fig. 37. Benneviaspis salopiensis sp. nov. Imperfect cephalic shield, a, Naso- hypophysial area, much enlarged, b, Longitudinal section through same. The holo- type. Besom Farm Quarry. x 1-5. indicate the same arrangement. The supposed existence of the independent nasal opening in this genus is probably due to the shearing off of the top of the eminence. The left sensory field is faintly indicated and is seen to be narrow with a small postero-medial projection. The ornamentation cannot be made out except around the naso-hypophysial aperture, as described, and along the margin where it consists also of minute reti- culated ridges or tubercles. Remarks. This species is very clearly marked by the shape and size of the median dorsal sensory field alone. Both the previously described English species, B. lankesteri and B. anglica, as well as the three from the Red Bay Series of Spits- bergen have narrow dorsal fields, whereas the three from the later Wood Bay Series have wide fields, although not so large as that of B. salopiensis nor of the same. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original British Museum (Natural History). London : BM(NH)
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