THE MOUNT DESERT REGIOX 295 



BRYOZOA Ehrenberg, 1831 



Subclass ENTOPROCTA Nitsche, 1869 



Pedicellinidae Johnston, 1847 

 Pedicellina M. Sars, 1835 

 Pedicellina cernua (Pallas), 1771. (Osburn, 1912, p. 213, 

 for synon^Tny and American records.) Common on stones 

 at the Nubble at the entrance to Bunkers Cove. A few 

 specimens show the spines on the stalk of calyx, but for the 

 most part they appear to represent the nominal variety 

 glabra. This species is common to the southward and 

 Cornish found it at Canso, Nova Scotia, but it has not been 

 recorded farther northward on the American coast. 



Barentsia Hincks, 1880 



Barentsia major Hincks, 1888. (Hincks, 1888, p. 22(3, Gulf 

 of St. Lawrence; Jullien and Calvet, 1903, p. 27 {B. elon- 

 gata), Grand Banks of Newfoundland; Osburn, 1912, p. 213, 

 Woods Hole, Mass.) A single small colony was observed in 

 the material sent for examination, but this and the following 

 species were noted without separation by the collector from 

 shore station 11 and dredge stations 27, 67, 83, and 135. 



Hincks (I.e.) described this species from the Gulf of 

 St. Lawrence. It was found to be fairly commonly dis- 

 tributed around "Woods Hole, though never in very large 

 numbers. It is easih^ recogiiized by the large calyx and the 

 elongate imperforate stalks which taper slightly downward 

 toward the enlarged base, which joins directly with the stolon 

 without any change in size. 



Barentsia gracilis (Sars), 1835. (Whiteaves, 1901, p. 114, 

 on the authority of Hincks from the Gulf of St. Lawrence; 

 Cornish, 1907, p. 79, Canso, Nova Scotia.) Several colonies 

 were found on a pebble without a station number, and, as 

 indicated under the previous species, it may occur at several 

 places about the Mt. Desert Island Region. The specimens 

 show a great deal of variation. Some of the stalks are short 

 and unjointed, others very long with 1 or 2 muscular joints 



