BIGELOW: COAST WATER EXPLORATION OF 1913. 315 



has been the subject of much discussion. The two have usually been 

 separated according to the number of otocysts, spedmens with eight 

 being classed as rosea, those with four as digitale. But such a division 

 is purely artificial, because specimens often have five, six, or seven oto- 

 cysts. Mayer (1910) unites the two unequivocally. I have followed 

 him in my discussion of Aglantha from Behring Sea (1913a) and 

 Kramp (1914, p. 432) likewise concludes that the number of otocysts 

 is not suflaciently constant to afford a specific character, though main- 

 taining that rosea is recognizable as a variety of digitale. It is doubt- 

 ful, however, whether even this last characterization of rosea will 

 stand the test of time. 



Every specimen of Aglantha in the present collection which was in 

 good enough condition to show the otocysts at all had at least seven, 

 and their spacing along the margin of the bell was such as to show that 

 the number in life was eight. These specimens range from 7-11 mm., 

 in height, with 39-94 tentacles; and are at various stages of maturity, 

 from one with no gonads to one in which they are fully developed. 

 The many specimens which I have studied from Labrador and New- 

 foundland likewise had eight otocysts (1909c, p. 312). These were 

 recorded under the name rosea, following the custom usual at that 

 time, for Aglantha with eight otocysts. And although Kramp (1913a, 

 p. 527) has recently questioned whether these specimens were actually 

 rosea, it was so simple a matter to count the otocysts that there can be 

 no doubt that they belonged to the form with eight of these organs, 

 no matter what may be its final nomenclatural resting place. And 

 I may add that all the specimens of Aglantha from American waters, 

 Atlantic or Pacific, on which I have been able to count the otocysts 

 have more than four; usually eight. 



Cyanea. The specimens from the Gulf of Maine and from George's 

 Bank belong to the large, red northern race (" arctica") ; but we found 

 only the small yellowish form {fuha L. Agassiz) south of New York. 



Stephanomia cara. The generic identity of the material is estab- 

 lished by the fact that the few tentilla still intact have the involucre 

 and single terminal filament. And the bracts and nectophores, which 

 were taken in great numbers, agree perfectly with S. cara as described 

 by A. Agassiz (1865) and by Fewkes (1888). But unfortunately the 

 material was not in good enough condition to show whether or not 

 the northern cara is actually separable from the southern bijuga. 



Pleurobrachia pileus. Mayer (1912) has recently described a new 

 Pleurobrachia, P. brunnea, from just the locality where Pleurobrachia 

 was found in greatest numbers ; wdiich makes a review of the grounds 

 on which I class our specimens as pileus desirable. 



