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of the oral area. There are very slight searas between tlie coxal 
plates exelusive of those between the two last pairs; the fifth pair 
are very small. 
Tig. 16. Holophryxus Acanthephyræ. The oral area. 
The ventral surface is, exelusive of the hindpart, somewhat 
concave. The oral area with the pereiopods is rather small and 
about semicircular. The antennæ seem to be articulated, the lirst 
Fig. 17. Holophryxus Acanthephyræ. 
Hind part from below. 
pair in 3, the second pair in 5 joints; but it is not exeluded that 
the apparent articulation is in reality simple folds. Between the 
antennæ the tip of the mandibles is visible. The gnathopod lies 
