伸缩泡

单一、大伸缩泡位于口围缘的下方。

Single contractile vacuole large , situated underneath peristomial lip .

对本种的鉴定应基于活体体形及伸缩泡的位置及其收集管特征。

The main characters for its identification are the body shape and the collecting channels of the contractile vacuole .

两个小伸缩泡位于口前庭的腹缘。

Two small contractile vacuoles located near ventral wall of infundibulum .

四个小的伸缩泡，两个在左侧中央，另外两个在细胞后部；

Four contractile vacuoles , two in middle near left margin and two at posterior end of cell .

单一伸缩泡，位于前庭腹面。口围缘到反口纤毛环之间的银线数约28-33列，反口纤毛环至帚胚之间约5-8列。

Single contractile vacuole situated near ventral wall of infundibulum.28-33 pellicular striations from peristome to aboral trochal band and5-8 from aboral trochal band to scopula .

比较：本种较罕见，鉴别根据组合的下列特征：体动基列数目、伸缩泡数目和位置以及矛状体形。

Comparison : The main characters for the identification of this species are the number of somatic kineties , the position and number of contractile vacuoles and the lanceolate shape .