30-i 



BULLETIX: MUSEUM OF COMPARATIVE ZOOLOGY. 



Most of these species ha^■e been recorded from ^he Gulf of IMaine, 

 (A. Agassiz, 1865; Bigelow, 1914a, 1914b, 1915). The Grampus 

 records add Httle to previous knowledge, either systematic or geo- 

 graphic. 



Perhaps the most interesting feature of the Grampus collections is 

 the general scarcity of coelenterates at all of the Gulf stations, at any 

 distance from land, except for the following species, Phialidium langui- 

 dum, Mitrocoma cruciata, Aglantha digitale, and Pleurobrachia pileus. 



The records for these in 1915 are: — 



The presence or absence of Aurelia and Cyanea is always worth 

 noting, because they are such t\pically neritic organisms (X914a, 

 Damas, 1909) that their occurrence is a sure index of coast water. 

 Their rarity over the whole offshore parts of the Gulf, and off Nova 

 Scotia, except close to land, in which the records for 1914 and 1915 

 agree with previous experience is discussed above. Phialidium is less 

 closely restricted to the shore than either Cyanea or Aurelia (p. 251), 

 hence probably is not limited to such shallow water during its fixed 

 stage. However, none of the captures of Phialidium have been far 

 outside the 100 fathom curve; nor more than fifty miles from land, 

 and most of the records are much nearer the shore. On each of the 



' Also abundant in Kittery River and off Rye, N. H., July 23. 



