THE MOUNT DESERT REGION 153 



P. EREMiTA (M. Sars). (Geronld, 1913, p. 385, pi. 58, fig. 4, 

 text fig*. 1.) One specimen, 17 mm. long, taken at D 150. 



P. MiNUTUM Keferstein. (Paul, 1909, p. 3, pi. 1, figs. 1-24.) 

 The only specimen of this species in the collection is 18 mm. 

 long and 9 mm. in diameter. Anteriorly the mouth is located 

 between 2 broad lips which in life are in a constant gliding 

 motion. The body is covered with closely set, white spines 

 or bristles, which are longer toward the posterior end. 



If the identification be correct, this is the first record of 

 the species on our coast. Station : D 150. 



Phascolion Theel 

 P. STROMBi (Montagu). (Gerould, 1913, p. 403, pi. 60, figs. 

 10, 12, text figs. 9, 10.) The only common sipunculid in this 

 region. Found in the shells of Dentalium and all sorts of gas- 

 tropods of medium size. Sexually mature in August. Its 

 abundance rather parallels that of gastropods. Taken on 

 various bottoms from low water to 330 feet. Stations: 42 

 dredging stations, of which the best are : 25, 27, 64, 144, 150 ; 

 and S 11. 



Subclass ECHIUROIDA 



Echiuridae 

 EcHiuRis Cuvier 

 E. pallasii Guerin. (Wilson, 1900, p. 170, figs. 1, 2.) Found 

 15 to 20 cm. deep, in mud under mussel beds. The specimens 

 range in length up to 65 mm. Stations : S 9, 33. 



