Description of Two New Phyllopoda. 11 



The caudal rami (see figs. 1, 2) are considerably elongated, 

 attaining about half the length of the tail proper. They 

 are rather narrow, gradually tapering distally, and are all 

 round fringed with strong ciliated setæ, springing off from 

 distinct ledges of the edge. By the aid of some muscular 

 bundles joining their bases, they admit of being to a certain 

 extent spread out and again brought together. 



Of inner organs, the intestine is very clearly traced 

 through the pellucid integuments (see figs. 1, 2), extending 

 as a cylindric tube through the axis of the body. It is a 

 little wider in front than behind, and sends off in the head 

 anteriorly 2 small rounded cæca of apparently quite a 

 simple structure. The rectum is very short, and confined 

 to the last caudal segment. 



Immediately above the intestinal tube, the very long 

 vessel-like heart may easily be traced in the living animal, 

 exhibiting in each segment a pair of venous ostia. 



The ovaria were not distinctly visible in the solitary 

 adult specimen examined, apparently owing to the recent 

 evacuation of their contents into the marsupinm. It would, 

 seem, however, that they are confined to the posterior 

 division of the body, as not the slightest trace could be 

 detected in the trunk, whereas in the tail several scattered 

 cellular bodies, apparently belonging to these organs, occurred 

 on each side of the intestine (see figs. 1, 2). At the base 

 of the marsupium an irregular glandular mass was distinctly 

 observed, apparently of the same kind as that furnishing in 

 other Branchipodids the material for the egg-shell. 



The ripe ova contained in the marsupium are, in this 

 form, of a highly remarkable appearance. They are (see 

 figs. 7, 8, 9) each enclosed within a rather large and firm, 



2 — Archiv for Math, og Naturv. B. XVIII. No. 8. 

 Trykt den 9de Oktober 1896. 



