Transverse section of body of female lobster in plane of gastric mill. ad. m. abductor mandibuli muscle; art, branchio-cardiac vessel; arth. br., arthrobranch; br. cav., branchal cavity; brs, branchiostegite; d. g. g. duct of gastric gland; fl. g. ch. bas

Freshwater and Marine Image Bank, University of Washington Libraries Digital Collections