MUSEUM OF COMPARATIVE ZOOLOGY. 279 



tion to this identification, and makes it a new species of Liriope, to which he 

 assigns the name L. conirostris. From the fact that no mention is made by 

 McCrady of " blinde Centripetal-caniile," Haeckel refers L. scutigera, McCr. 

 to his own genus Liriantha. 



In my work on the medusae of Narragansett Bay a very poor tigiire of what 

 I regard the same as L. scutigera is given, as taken at Newport, K. I.* 



Fritz Miillert has published an anatomy and development of L. Catharinensis, 

 F. M., which differs from the medusa about to be described only in the want 

 of the blindly ending centripetal canals, which lie between the radial tubes. 

 In all details the likeness is very close. It also is placed in the genus Lirian- 

 tha, Haeck., by Haeckel, J on account of the want of these centripetal structures. 

 In the use of the generic designations Glossoconus and Glossocodon in the " Sys- 

 tem der Medusen " of the latter author, the medusa which is here described 

 would be placed under the latter rather than the former genus ; yet in the 

 figures of the oldest stage found there will be noticed two kinds of tentacles on 

 the bell margin, whereas Glossocodon has but one kind, viz. tentacles of the 

 radial tubes. In Glossoconus there are two kinds of tentacles on the bell 

 margin, as well as blindly ending centripetal canals between each pair of radial 

 tubes. In younger stages, however, according to Haeckel, there is only one 

 such canal between every pair of tentacular vessels. 



Many specimens § of the genus Glossocodon, which is strictly speaking in the 

 Glossoconus stage described by Haeckel, were found at the Tortugas. It has the 

 ovaries well developed and to every appearance is sexually mature. No speci- 

 men was taken with less than eight tentacles, and consequently if on further 

 study it should be found to drop certain tentacular bodies on the bell rim mid- 

 way between the tentacular vessels (radial tubes), it should be referred to 

 Glossocodon. In its present condition it belongs to the genus Glossoconus, 

 Haeckel. 



The species differs from Liriope scutigera, McCr. in having but one kind 

 of otocyst, and in possessing the blindly ending centripetal tubes {d, PI. VII. 

 tig. 1). The figure of L. scutigera, A. Ag., has four long tentacles, and ova- 

 ries of a different form, while there are no centripetal tubes. It resembles L. 

 Catharinensis, F. Miill., in every respect except that the centripetal canals are 

 wanting in Miiller's figure and description. In L. Agassiz's short description of 

 L. tenuirostris, there is nothing to eliminate our species. Instead of introducing 

 a new name, his specific designation has been adopted. 



The adult Glossocodon has a deep, almost spherical bell (PI. VII. fig. 1). The 



* Studies of the Jelly-fishes of Narragansett Bay. Bull. Mus. Comp. Zool., 

 VIII. 8. 



t Polypen und Quallen von S. Catharina. Arch, f. Naturg., 1859, pp. 310-321, 

 Taf. XI. figs. 1-25. 



X Das System der Medusen, I. 1, p. 287. 



§ The adult and young of this medusa figured on PI. VII. figs. 1-9, were drawn 

 from nature by A. Agassiz. 



