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Richardsons ground squirrel, Urocitellus richardsonii (Richardsons spermophile, Spermophilus richardsonii). Chromolithograph by Trautmann, Bailey and Blampey after an illustration by Ernest E
Richardsons ground squirrel and thirteen-linedRichardsons ground squirrel, Urocitellus richardsonii, and thirteen-lined ground squirrel, Ictidomys tridecemlineatus. Handcoloured copperplate engraving from Rene Primevere Lessons Complements de
Dr. Richardsons polemonium, Polemonium richardsonii. Handcoloured copperplate engraving by Swan after an illustration by William Jackson Hooker from Samuel Curtis Botanical Magazine, London, 1828
