IG 
UIWATELLA GRACILIS, A FBESH-WATEK ROLVZOAX. 
6. Loxosoma eaja. 
Schmidt: Arch. mikr. Anat., 1876, 3, Taf. I, 
An. Nat. Hist., 1879, 137. 
fig. 1 ; Zeits. f. wis. Zool., 1878, 71. 
Locality. — Naples. 
Norman : 
7. Loxosoma alata. 
Barrois: Embryologie Bryozoaires, 1877,9. 
L. pes = L. singulare. Schmidt : Zeits. wis. Zool., 1878, 69, 70. 
1879, 137. 
Locality . — N aples. 
Norman: An. Nat. Hist., 
8. Loxosoma crassicauda. . x- » 
Salensky : An. Sc. xNat., 1877. Schmidt : Zeits. f. wis. Zool., 1878, 71. Norman : An. Nat. 
Hist., 1879, 137. 
Locality . — Bay of Naples. 
9. Loxosoma tethy^. 
Salensky: An. Sc. Nat., 1877. Schmidt: Zeits. f. wis. Zool., 1878, 71. Norman : An. Nat. 
Hist., 1879, 137. 
Locality . — Bay of Naples. 
10. Loxosoma claviforme. 
Hincks: British Marine Polyzoa, 1880, 575, PI. 81, figs. 9-12. 
Jjxality . — Guernsey Island, English Channel. 
Plate I. 
Fio. 3. 
Fia. 4. 
Fig. 5 
Fig. 6 
Fig. 7. 
Fig. 8. 
Fig. 9. 
EXPLANATION OF THE FIGURES OF URNATELLA GRACILIS. 
. Incurved appearance of the stem and closed condition of the polyip-bells, as the position 
assumed by Urnatella when disturbed. The main stem represented consists of eleven 
segments, including the polyp-bell. The other stem consisted of nine segments, including 
the pol 3 'p-bell. 75 diameters. 
!. Appear.ance of 17rna<eZ7a fully extended. The main stem of a dozen segments, including 
the polyp-bell. The first segment of the second stem represented with the molecular 
structure of the central cord projecting. 75 diameters. 
Polyp-bell of Urnatella, with the succeeding segment. 166 diameters. 
Specimen in which a brancli of six segments is given from the second segment of the 
main stem, consisting of eleven segments. The other main stem, of ten segments, likewise 
gave off a brancli which consisted of five segments. 40 diameters. 
. '1 oung Urnatella ; each stem consisting of a polyp-bell and simple pedicel. 75 diameters. 
. A oung Urnatella; m which one stem has a simple pedicel, and in the other it has under- 
gone division into two segments. 75 diameters. 
A'oung Urnatella, m which both stems are divided into two segments. One stem extended 
with the polyp-bell expanded ; the succeeding segment with a bud. The other stem bowed 
and tlie polyp-bell closed, the position assumed when the poly)i is disturbed. 75 diameters. 
Lrnatella, with the two stems each of five segments, including the polyp-bell. Polyp at 
rest, the stems bowed .and bells closed. 55 di.ameters. 
,>oi'vXT‘ « „e,v brnnol,, con.Uting of a 
polj ibbcll with Its pedicel. Prom the latter a hud has put forth. 60 diameters 
