io8 



CHAS. W. HARGITT. 



Color. — Bell very transparent, or with only the slightest tint 

 of color by reflected light ; tentacular bulbs and base of manubrium 

 brownish red due to the presence of scattered pigment granules 

 in the entoderm ; tip of manubrium slightly bluish by reflected 

 light. While the colors may be easily distinguished they are 

 incomparably inferior to those of E. ochracea, a very nearly related 

 species. 



Dr. A. G. Mayer has informed me that the hydroid of E. 

 ochracea has been taken by him at Newport and that it has much 

 in common with the hydroid here described. The characters of 

 the medusa are, however, very different from that of the former. 



Fig. io. Aspect of newly 

 born medusa. 



Fig. ii. Aspect of fully developed 

 medusa. 



Having taken those medusae by hundreds for many years one 

 could hardly confuse them with any other known species. It 

 had seemed possible that this might be identical with McCrady's 

 Sarsia turricula but a careful comparison of the original figures 

 and description makes it perfectly certain that the species are 

 wholly different ; indeed I am inclined to believe that 6". turricula 

 is evidently of a different genus, as McCrady has indicated, and 

 that Agassiz was in error in placing it under his newly established 

 genus, Ectopleura. The only species with which the present one 

 is at all comparable is the Tubularia dnmortierii of Van Beneden, 

 but here again there are points of difference, especially in the 

 size and features of the medusa. It seems therefore rather prob- 

 able that we have here a new species, or in any case a variety 



