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Table 1 Equivalency table for terminology related to the cnidosac from published research [3, 30, 31, 64,65,66,67,68,69, 74]

From: Comparative morphology and evolution of the cnidosac in Cladobranchia (Gastropoda: Heterobranchia: Nudibranchia)

Author Herein

Cnidosac

Cnidocysts

Channel

Exit/Cnidopore

Cnidophage

Digestive gland

Hancock & Embleton 1845

ovate vesicle/sac

elliptical bodies with slender, hair-like filaments

ciliated channel

external orifice

little transparent ellipsoidal membranous bags

liver caecum

Wright 1863

ovoid vesicle/sac

cnidae, thread cells

–

–

–

biliary sac

Herdman & Clubb 1889

cnidophorous sac

cnida

connecting tube, ciliated canal

terminal opening

cnidocyst

hepatic caecum

Herdman 1890

cnidophorous sac

cnida, thread cells

slender tube with thin walls & few muscle fibers

clearly defined aperature at the apex

cnidocyst

hepatic diverticulum

Grosvenor 1903

cnidophorous sac/cnidosac/cnidophore

nematocysts

ciliated canal

terminal opening

cnidocyst/cnidoblast

alimentary canal/ diverticula of the gastric gland

Edmunds 1966

cnidosac

nematocysts

–

cnidopore

cells

digestive gland

Kälker & Schmekel 1976

cnidosac

cnidocysts

pore/ narrow duct

entrance

nematophage

hepatopancreas

Conklin & Mariscal, 1977

cnidosac

nematocysts

–

cnidopore

cnidocyst

 

Ohkawa & Yamasu, 1993

cnidosac

nematocysts

–

–

cnidophage cell

digestive diverticulum

Greenwood 2009

cnidosac

nematocysts/kleptocnidae

–

–

cnidophage cell

digestive diverticula