The type specimen of Monograptus sedgwicki Portlock sp. has at last been found in the Collection of the Geological Survey in London, and Dr. Stubblefield has submitted it to me for examination. It bears the label “Prionotus sedgewicki” Portlock, and Graptolithus sedgewicki, and there can be no doubt of its identity. Portlock described the fossil as Graptolithus—PrionotusSedgewicki stating that it was named after Professor Sedgewick, though that is not the correct spelling of the name of that great geologist, which should be written without the second “e”.