We describe a new species of riparian gymnophthalmid from Guyana characterized by striated rostral and mental scales, three rows of scales of subequal size between the rostral and frontal scales, and the absence of a unpaired median postmental. The new taxon shares derived features with species in Echinosaura, Neusticurus, Potamites, and Teuchocercus, including heterogeneous and heavily keeled body squamation, an elongate snout, and gracile limbs.
Etymology.- The specific epithet, sulcarostrum, is a noun in apposition and a conflation of the Latin words sulcus, meaning furrow or groove, and rostrum, meaning snout.
Donnelly, M.A.; MacCulloch, R.D., Ugarte, C.A. & Kizirian, D. 2006. A New Riparian Gymnophthalmid (Squamata) from Guyana. Copeia. 2006 (3): 396-403 http://jstor.org/stable/4098703