<sod>*[[David Humphreys Storer|Storer, DH]]. 1839. ''Reports on the Fishes, Reptiles and Birds of Massachusetts''. Boston: Commissioners on the Zoological and Botanical Survey of the State. xii + 426 pp. (''"C[oluber]. occipito-maculatus"'', p. 230).<eod>
<sod>*[[David Humphreys Storer|Storer, DH]]. 1839. ''Reports on the Fishes, Reptiles and Birds of Massachusetts''. Boston: Commissioners on the Zoological and Botanical Survey of the State. xii + 426 pp. (''"C[oluber]. occipito-maculatus"'', new species, p. 230).<eod>