Genus of roundworms
Cucullanus is a genus of parasitic nematodes. The genus includes more than 100 species.
Among the species, "Cucullanus cirratus" is a parasite of cod. 
"Cucullanus genypteri" is a parasite of the pink cusk-eel, "Genypterus blacodes".
Two species known as "C. pybusae" and "C. stelmoides" were discovered in 1978 inhabiting the liver and intestines of the American brook lamprey.
References.
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