ClipArt ETC
"Section through cephalothorax of a crab. H., Heart; Te., extension of the tergum; ST., sternum; PL., pleuron; T., tendons; 1st W.L., insertion of first walking leg; Br., gill in gill-chamber; g., gut; d.a., descending artery; A., afferent branchial; E., efferent branchial." -Thomson, 1916

Crab Cephalothorax

"Section through cephalothorax of a crab. H., Heart; Te., extension of the tergum; ST., sternum; PL.,…

"Ventral aspect of femal shore crab. Abd., Abdomen; mxp., third maxillipede." -Thomson, 1916

Female Shore Crab

"Ventral aspect of femal shore crab. Abd., Abdomen; mxp., third maxillipede." -Thomson, 1916

"Dorsal aspect of shore crab (Carcinnus). Abd., Abdomen; A1., antennules; A2., antennae; E., eyes; F., forceps." -Thomson, 1916

Shore Crab

"Dorsal aspect of shore crab (Carcinnus). Abd., Abdomen; A1., antennules; A2., antennae; E., eyes; F.,…

"Dorsal aspect of swimming crab (Portunus). P., Paddle; Abd., abdomen; A1., antennules; A2., antennae; E., eyes; F., forceps." -Thomson, 1916

Swimming Crab

"Dorsal aspect of swimming crab (Portunus). P., Paddle; Abd., abdomen; A1., antennules; A2., antennae;…