Cambarus (Somerville, Mass., April 1852), Jacques Burkhardt, 1852-04-??

Taxonomic classification: animalia--cambarus--cambarus troglodytes junior?. Common name: crayfish. Date: 1852-04-??. Dimensions: 11 x 17 cm.. Medium: watercolor on paper. Collection: Harvard University. Cambarus (Somerville, Mass., April 1852)