Nine brittle-stars (Cape Cod and Boston, Mass., 24 August 1847), Jacques Burkhardt

Taxonomic classification: animalia--ophiopholis aculeata. Taxonomic classification: animalia--ophiocoma conferta. Date: 24 August 1847. Dimensions: 25 x 30 cm.. Medium: pencil on paper. Collection: Harvard University. Nine brittle-stars (Cape Cod and Boston, Mass., 24 August 1847)