Hatschek's pit
In the lancelet, Hatschek's pit, not to be confused with Hatschek’s nephridium, is a deep ciliated fossa on the dorsal midline of the buccal cavity (the region of the gut behind the mouth) [1] Among other things, it secrets mucus which entraps food particles from the water. It is named after Berthold Hatschek, an Austrian zoologist who worked on the lancelet.
References
- Jefferies, R.P.S. (December 1, 1986). The Ancestry of the Vertebrates. London, England: Intercept Ltd.
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