The Collaborative International Dictionary
Proscolices
Proscolex \Pro*sco"lex\, n.; pl. Proscolices. [NL., fr. Gr. ? before + ?, ?, a worm.] (Zo["o]l.) An early larval form of a trematode worm; a redia. See Redia.
Wiktionary
proscolices
n. (plural of proscolex English)