14 UllNATELLA GRACILIS, A FRESH-WATER POLIZOAN. 
In this genxxs the polyp-bells put forth buds which develop into polyps like the 
parent; and the young polyps then spontaneously separate to attach themselves to 
other objects, just as we have reason to suppose is the case with the young ot 
Urnatella. 
The polyzoa of the family of Pedicellince, thus far described, are as follows : 
PEDICELLINA. 
1. PEDICELLINA CERNUA. , tit • 
Smitt: dfvers. Vetens. Akad. Fdrhand., Stockholm, 1811, 1132. Hineks : British Marine 
Polyzoa, 1850, 505. 
BracMonus cernuus. Pallas: Natiirges. merkw. Thiere, 1178, 57, Tab. It , fig. 10. 
PedicelUna echinata. Sars : Beskr. og lagttag., 1835, 5, Tab. I, fig. 1. Hassall : An. Xat. 
Hist., 1841, 365. Johnston : British ZooplyTes, 1847, 382, PI. LXX,fig. 5. Xitsche : Zeits. 
wis. ZooL, 1870, 13, Taf. 2, 3. Barrois : Rech. sur PEmbryol. d. Bryozoaires, 1877, 27, PI. II. 
Xoc«Z%.— Shores of Norway, Spitzbergen, Heligoland, White Sea, Great Britain, 
France and Sicily. 
2. PEDICELLINA GRACILIS. 
Sars: Boskriv. og lagttag., 1835, 6, Tab. I, fig. 2. Smitt: Ofvers. t etens. Ak. Fdrli., 
Stockholm, 1850, 1133. Hineks : British Marine Polyzoa, 1850, 570, PI. LXXXI, figs. 4-C. 
Ijocality. — Norway, Spitzbergen, White Sea, Roscoff, Great Britain. 
3. PEDICELLINA BELGICA. 
P. J. Van Beneden : Mem. Acad. d. Sc. de Bruxelles, 1845, 23, PI. I, II. 
Locality. — O.stende, Belgium. 
4. PEDICELLINA NUTANS. 
Dalyell: Remarkable Animals of Scotland, ii, 1848, 63, PI. XX. Hineks: British Marine 
Polyzoa, 1880, 507. 
Locality. — Scotland ; Tenby. 
5. PEDICELLINA AUSTRALIS. 
Ridley: Proc. Zool. Soc., 1881, GO, PI. VI, fig. 8. 
PedicelUna n. s.? Studer: Archiv f. Naturges., 1870, 124. 
Probably not different from the succeeding species. 
ZocaZi///.— Straits of Magellan; Kerguelen Land. 
6. PEDICELLINA AMERICANA. 
• Leidy: Jour. Acad. Nat. Sc., 1855, 11, PI. X, fig. 25. Verrill : Rep. of the Sea Fisheries of 
1871, 2, Washington, 1873, 405, 707. Ryder : Rep. of Com. of Fish, of Maryland, 1881, 34. 
Zoca%.— Point Judith, Rhode Island ; Chesapeake Bay, Md. 
7. PEDICELLINA. 
A„,o„g „,„c note I n„d tho following d„„riptio. and acoompanj-ing .ketch of a specie, of 
M.cellwa, (.voodent C), apparently dWe.ent from the preceding. The specimen was obtained in 
bewpoit harbor, Jr. I., from a depth of twenty fathoms, in .Tilly IS.hh Polvn atocl- 
jointel root, sending off .tern, ...pportlng single polyp-bells, fro; one to thrive liny, sS 
