Description of Two New Phyllopoda. 19 



tail, and are almost straight, with the greater part of their 

 hind edge clothed with numerous long, ciliated setae. The 

 outmost part of the claws forms, as it were, a separate 

 terminal joint, and has at the base a short spine, whereas 

 its hind edge is throughout very finely denticulated. 



The eyes (see PI. Ill, fig. 1) are rather large and placed 

 close together, so as to appear, in a lateral view of the 

 animal, as a single organ. They exhibit each a great 

 number of visual elements radiating from the dark pigment, 

 and forming together a clear peripheric zone. Three narrow 

 muscles pass from behind to each eye and allow that organ 

 in the living animal to be moved to a certain extent. 



The ocellus is placed at a considerable distance from 

 the eyes within the rostral expansion, to the end of which 

 it is connected by a short ligament, whereas another much 

 longer ligament is seen to pass from its upper end and 

 enter the frontal part, affixing itself to the skin of the 

 head immediately below the eyes. The organ exhibits a 

 similar prismatic shape to that found in the European 

 Limnadia lenticularis. 



The antennulæ (see PI. II, fig. 4; PL III, fig. 1) originate 

 from the lower side of the head, just in front of the 

 anterior lip, and are generally extended downwards. They 

 are rather short, scarcely exceeding half the length of the 

 head, and are each composed of a short basal part and a 

 somewhat narrower terminal part, the anterior edge of which 

 is divided into 6 — 8 irregular rounded lobules densely set 

 with small olfactory papillæ. 



The antennæ, or oars (PI. Ill, fig. 2) issue with a broad 

 base from the sides of the head in front of the mandibles, 

 and consist each of a thick, cylindric scape, and two slender, 

 multiarticulate rami. The outer part of the scape is 



