Two new genera of nemertean worms of the family Tetrastemmatidae (Nemertea: Monostilifera)
A.V. Chernyshev
Abstract. Protetrastemma gen. n. (type species Tetrastemma viridis Kulikova, 1989) and Quasitetrastemma gen. n. (type species Tetrastemma nigrifrons Coe, 1904) are established. Quasitetrastemma stigmatum (Yamaoka, 1940), comb. n. is reinstated as a valid name.
Zoosystematica Rossica, 2003, 12(2): 151–156 ▪ Published in print 20 May 2004
https://doi.org/10.31610/zsr/2003.12.2.151 ▪ Open full article 
References
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