Protistology 1 (1) 10–16 (1999)
Australian records of two lesser known genera of heterotrophic euglenids - Chasmostoma Massart,
1920 and Jenningsia Schaeffer, 1918
W.J. Lee, R. Blackmore and D.J. Patterson
School of Biological Sciences, University of Sydney, NSW 2006, Australia
Summary
We report on Chasmostoma and Jenningsia, two genera of heterotrophic euglenids which have not been reported subsequent
to their initial descriptions. Chasmostoma nieuportense was poorly described from Belgian coastal waters by Massart in 1920. A redescription is
offered on the basis of material observed in a prawn farm in Queensland, Australia. The genus is distinguished by having an anterior cavity
into which the flagellum may be withdrawn when the organism is challenged. Jenningsia is a peranemid genus described with a single
emergent flagellum by Shaeffer in 1918. The genus was later redescribed by Lackey in 1940 as Peranemopsis. The recent
assumptions that these authors overlooked a second flagellum now seem to be in error, and we assign organisms previously described as
Peranema fusiforme and P. macrostoma, species of Peranema described with one emergent flagellum, and species in
the genus Peranemopsis to the genus Jenningsia.
Key words: Euglenida, Protozoa, Chasmostoma nieuportense, Jenningsia diatomophaga, Jenningsia fusiforme n. comb.,
Jenningsia macrostoma n. comb., Jenningsia curvicauda n. comb., Jenningsia deflexum n. comb., Jenningsia
furcatum n. comb., Jenningsia glabrum n. comb., Jenningsia granulifera n. comb., Jenningsia kupfferi n. comb.,
Jenningsia limax n. comb., Jenningsia macer n. comb., Jenningsia nigrum n. comb., Jenningsia sacculus
n. comb.
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