THE MOUNT DESEET REGION 291 



THE BRYOZOA OF THE MT. DESERT REGION 



KAYMOND C. OSBUEN 



Ohio State University 



The region about Mt. Desert Island, off the coast of Maine, 

 is of special interest in the study of this group, since it lies 

 intermediate to localities in which the Bryozoa have been 

 given considerable attention. The long stretch of coast known 

 as the Gulf of Maine, reaching from Cape Cod to Nova Scotia, 

 has been but little studied as far as this group is concerned, 

 though some of Packard's and Verrill's records extend into 

 this region. 



To the northward Stimpson (1853) made the first records, 

 and in his ''Marine Invertebrata of Grand Manan" listed 

 sixteen species of Bryozoa. Eleven of these were described 

 as new, but only three of these are now^ recognized, the others 

 being synonyms. Dawson, in 1859 and 1865, listed twenty-two 

 species from the Gulf of St. Lawrence, describing three as 

 new, one of which remains. Packard followed, in 1863 and 

 1867, with short lists of species from Labrador and Maine. 

 Hincks, in 1888, 1889, and 1892, contributed three short papers 

 on the ''Polyzoa of the St. Lawrence," in which he listed 

 twenty-eight species, four of them new. Whiteaves, in his 

 "Catalog of the Marine Invertebrates of Eastern Canada" 

 (1901), recorded 119 species known in that region, but some 

 of these are no longer considered good species. Cornish 

 (1907) listed thirty-one species as occurring at Canso, Nova 

 Scotia, and Osburn (1912 a) noted fifty-two species in the 

 collections made by Owen Bryant in the waters of Labrador, 

 Newfoundland, and Nova Scotia. 



In the southern New England region Desor (1848) men- 

 tioned a few species from about Nantucket Island, and 

 Leidy (1855) recorded eight from Rhode Island and New 

 Jersey. Verrill (1874) reported thirty-two species in his 



