. The Canadian naturalist and geologist. Natural history -- Periodicals. ii 2?. HoLOPEA REVERSA. N. sp. Fig. 14. Shell small, sinistral; spire depressed, volutions about three; the two first small and gradually expanding, the last one rapidly expanding and ventricose; aperture wide expanded; suture im- pressed. Surface unknown. This shell has the general form of Holopea, but I have seen only a single specimen, which is a cast. It is remarkable and readily recognised from the sinistral spire. 28. Orthoceras punctostriatum. N. sp. Fig. 15. Shell slender, very gradually tapering, almost cylindric
. The Canadian naturalist and geologist. Natural history -- Periodicals. ii 2?. HoLOPEA REVERSA. N. sp. Fig. 14. Shell small, sinistral; spire depressed, volutions about three; the two first small and gradually expanding, the last one rapidly expanding and ventricose; aperture wide expanded; suture im- pressed. Surface unknown. This shell has the general form of Holopea, but I have seen only a single specimen, which is a cast. It is remarkable and readily recognised from the sinistral spire. 28. Orthoceras punctostriatum. N. sp. Fig. 15. Shell slender, very gradually tapering, almost cylindrical; Septa distant about one third the diameter. Siph uncle central; section circular. Surface very finely striated with unequal undu- lating strisG, the interstices between which, are punctse which are oblong indentations often becoming 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
Size: 1165px × 2144px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthornaturalh, bookcentury1800, bookdecade1860, bookyear1860
