Maxillary segment: the sixth segment of the head, bearing the maxillae.
The extreme anterior part of the bar is formed by the maxillae.
The prefronto-lachrymals (fig. 21, A and C, 7) connect the frontals with the maxillae.
The maxillae are large bones, each terminating in a point posteriorly.
Nasals and maxillae are absent, as is likewise the case in Proteus.
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