THE MOUNT DESEKT EEGION 301 



from the Bay of Fundy, 'U. S. Fish Com., 1873.' The seventh 

 specimen is from Mt. Desert Island (station not indicated). 

 All of the specimens encrust shells, except the one from the 

 Bay of Fundy, which was on a pebble. Doctor Hastings adds 

 the following records from the British Museum : Gulf of St. 

 Lawrence, Whiteaves, Norman Collection, and Gaspe, Hincks 

 Collection, both with ovicells and both labeled ^ Stomatopora 

 diastoporides.' Miss Hastings further writes, ''So far I have 

 not found a specimen from anyrv'here but Canada. It seems 

 clear that it is the S. diastoporides of Whiteaves' paper." 

 However, as the true diastoporides also occurs in the Gulf of 

 St. Lawrence (I have a specimen labeled 'J. F. Whiteaves, 

 1873'), it is more probable that Hincks and Norman, who 

 identified Whiteaves' material, did not recognize the present 

 species as different. 



Diaperoeciidae Canu, 1918 

 DiAPEROECiA Canu, 1918 



DiAPEROECIA HARMERI U.Sp. PI. 3, figS. 6-8; pi. 4, fig. 1. 



( ? Cornish, 1907, p. 78 {Entalophora cJarata), Canso, Nova 

 Scotia.) Common on hard bottom, at 40 to 240 feet, attached 

 to various objects, but especially to algae and hydroid and 

 bryozoan stems. 



The zoarium begins as an incrustation, but soon becomes 

 erect and free in the form of an irregularly rounded stem 

 with tubules projecting from all sides. Frequently the stems 

 are branched and often more than one stem rises from the 

 basal portion. The erect stems are about 4 to 6 mm. in 

 height. The upper part of the stem is slightly curved or de- 

 flected, while the expansion of the ooecium on the side of the 

 greater curvature gives the upper part a somewhat clavate 

 appearance in side view. The free portion of the zooecial 

 tubes is rather long, frequently as long as the breadth of the 

 stalk, and irregularly corrugated. The apertures measure 

 about 0.11 mm. in diameter. The ooecium rises in the position 

 of an ordinary zooecium, about half way up the stem, and 

 expands gradually for about half of its length, then, as it 



