4897.] Zoology. 541 
>H ` group of long, hair-like cilia to the left of the peristome: 
rh series of such cilia along the right side of the neck. 
dh the same on the lest side. 
d “dorsal” cilia, or “ tactile hairs,” short on the anterior part of 
the body, longer from the peristome backward. 
cp some cilia near the posterior end of the body. 
Fig. 1. Specimen seen from the ventral side, with indication of the 
tube built by the animal, from which it is projecting more 
than usually ; the cavity in which the posterior part rests is 
omitted. On the right margin of the peristome (rpm) the 
membrane and the paroral cilia (um and pa r in fig. 2) are 
not, or very indistinctly, visible in this position. The adoral 
cilia are only indicated by one at the end of each transverse 
row (conf. figs. 5 and 7). 
Fig. 2. Anterior part viewed from the left side. The adoral zone is 
seen directly in front of l p m, through the projecting margin 
behind Zp m. 
Fig. 3. Contracted specimen, not in cavity; sketch. Others seen were 
of somewhat different shape. 
Fig. 4. Anterior end of animal just emerging from its tube. Adoral 
cilia laid together and directed backward, resting; the lines 
indicate not the cilia, but the spaces between the transverse 
rows. 
Fig. 5. The same, with the adoral cilia somewhat diverging. 
Fig. 6. The same, as seen in specimens sometime after fission, the adoral 
cilia are only indicated. 
Fig. 7. Single transverse row of adoral cilia, more magnified. 
Seale of figs. 1 to 6, X 500. —Dr, V. STERKI. 
New Philadelphia, Ohio, March, 1897. 
The “Urnes” and the Enigmatic Bodies in the Body- 
Cavity of Sipunculus.?—For some time the existence of certain pecu- 
liar bodies in the body-cavity of Sipunculus has been known. What 
their nature is has been a disputed question. Vogt and Young and 
Fabre-Domerque, influenced by the mobility of the bodies, have thought 
them autonomous, and have compared them with parasitic ciliated in- 
fusoria. Others, among whom must be mentioned Brandt, Ray-Lank- 
ester and Cuénot, have considered them as epithelial elements that have 
* J. Kunstler and A. Gruvel. Recherches sur I’évolution des Urnes. Comp. 
Rend., CX XIV, 309-12. we 
