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Figure 1


Fig. 1. Morphological analysis of N. bachei. (A,B) Images of N. bachei (A) at rest, and (B) during jet ejection. Image height is 7.2 mm. V, velum; DV, velar diameter; T, tentacles; OC, oral cavity; MW, mesogleal wall; A, animal apex. Out-pocketing of velum into funnel shape is discernable in B. (C) Sample of image analysis. Image from B superimposed with reconstructions of the oral cavity boundary (broken black line) and velum (solid black line), based on control points (white circles).