G. O. SAES 



P 



axis of the body. The lenticular bodies occupying the extremity 

 of the cylinder are highly refracting, but do not seem to be, 

 as in the preceding forms, divided into facets. 



The upper antennae (PI. VII, fig. 3) are comparatively short, 

 but powerful, with the basal part very thick and muscular. 

 The terminal part does not attain the length of the basal and 

 rapidly tapers towards the end. Of its joints the 1st is by far 

 the largest, equalling in length the two succeeding joints taken 

 together, whereas the two outer joints are very small. The 

 natatory setaa are very slender and elongate, exceeding the 

 antennas in length. 



The lower antennas (fig. 4) are considerably longer than 

 the upper and of the usual pediform aspect. The penultimate 

 joint is, however, unusually short, scarcely exceeding half the 

 length of the preceding joint. The apical claws of this and the 

 last joint are greatly elongated and slender, very slightly curved 

 in their outer part and finely denticulate. The natatory setae 

 are very slender and reach somewhat beyond the tips of the 

 apical claws. 



The labrum (see fig. 1) is large and prominent, rounded in 

 front and supported by several strong chitinous stripes. 



The mandibles (fig. 5) exhibit the usual structure. Their 

 body is very elongate, about twice the length of the palp, which 

 is provided with a well-developed branchial appendage. 



The 1st pair of maxillae (fig 6) somewhat resemble those 

 organs in the genus Stenocypris. Thus the palp is very narrow 

 and cylindrical in form, with the 1st joint not at all dilated at 

 the end, and the last joint nearly twice as long as it is broad. 

 The masticatory lobes are likewise rather elongate and slender. 

 The branchial plate (see fig. 1) is very large and of the usual 

 structure. 



The 2nd pair of maxillae (fig. 7) do not exhibit the slightest 

 trace of any branchial lamella. The masticatory lobe foM s 

 with the basal part a well pronounced angle and is rather 

 narrow, with numerous very delicate and curved apical bristles* 



