. The Canadian naturalist and geologist. Natural history -- Periodicals. 372 New Species of Trilobites. with short squamose wrinkles, of which there are from six to eight in one line. On the tail these seem to radiate irregularly from the axis as a centre. This species is related to I. Bayfieldi, but differs in its propor- tions, its head being larger and the axis of the thorax not square, but longer than broad ; the eye is more distant and the surface not smooth. /. crassicauda has a much larger pygidium, with a conical axis, well defined all round. Locality and formation.—Trenton Limestone,
. The Canadian naturalist and geologist. Natural history -- Periodicals. 372 New Species of Trilobites. with short squamose wrinkles, of which there are from six to eight in one line. On the tail these seem to radiate irregularly from the axis as a centre. This species is related to I. Bayfieldi, but differs in its propor- tions, its head being larger and the axis of the thorax not square, but longer than broad ; the eye is more distant and the surface not smooth. /. crassicauda has a much larger pygidium, with a conical axis, well defined all round. Locality and formation.—Trenton Limestone, City of Ottawa. Specimens with all the parts in place rare, as indeed are all the species except I. Bayfieldi. Illcenus Conradi. (N. s.). 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 Natural History Society of Montreal. Montreal, Dawson
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