40 CTENOPHORES OF THE ATLANTIC COAST OF NORTH AMERICA 



Ocyropsis maculata. 



Ocyroe tachee. Rang, 1828, M6m. Soc. d. Hist. Nat. de Paris, tome 4, p. 318, planche 



20, figs. 1,2, called O. maculata in the plate. 

 Ocyroe maculata, Lesson. 1843, Hist. Zooph. Acal., p. 99. — Agassiz, A., 1865, 



North Amer. Acal., p. 2';. — Fewkes, J. W., 1881, Bull. Mus. Comp. Zool. at 



Harvard College, vol. 8,"?. 137, plate 4, figs. 1-4.— Agassiz, A., 1888, Bull. 



Mus. Comp. Zool. at Harvard College, vol. 15, p. 129, fig. 423- — Chun, C, 



1898, Ctenophoren der Plankton-Expedition, p. 25. — Moser, 1903, Cteno- 



phoren der 5t6oga-Expedition, p. 18, 1908, Abhandl. Akad. Munchen, Suppl. 



Bd. I, Abhandl. 4, p. 66. 

 Calymma trevirani, Eschscholtz, 1829, Syst. der Acalephen, p. 33, Taf. 2, fig. 5. — 



Mertens, 1833, M^m. Acad. Sci. St. P^tersbourg, Sci. Math. Phys. et Nat., 



s6r. 6, tome 2, p. 508, Taf. 5, Fign. 1-3. 

 Ocyroe crystalUna, Fewkes, 1882, Bull. Mus. Comp. Zool. at Harvard College, vol. 



9, p. 281. 



We have no adequate account of this form. It appears to resemble 

 0. crystalUna, but there are 4 large, brownish spots in the muscular net- 

 work on the inner sides of the oral lobes. These 4 spots render the animal 

 very conspicuous. In other respects it appears to resemble 0. crystalUna. 

 It is said to be widely distributed over the tropical Atlantic, having been 

 foimd by Mertens off the African coast and by A. Agassiz at St. Vincent, 

 West Indies. It has not been seen at Tortugas, Florida, where O. crys- 

 talUna is sometimes abundant. Moser records it from Japan. It would 

 be unprofitable to quote from the inadequate descriptions of this cteno- 

 phore. A careful study of the animal is greatly to be desired. 



Moser, 1908, who studied only preserved specimens, states that the 

 oral lobes of O. crystalUna are evenly rounded, whereas those of 0. macu- 

 lata terminate in two points. Moser also states that she finds a small 

 tentacle in O. maculata, but this requires confirmation, for no other 

 observer has seen tentacles in Ocyropsis, and I am inclined to suspect 

 that she may have had some species of Deiopea. 



Genus EURHAMPHuEA Gegenbaur, 1856. 



Eurhamphcea, Gegenbaur, 1856, Archiv fur Naturgesch., Jahrg. 22, p. 193. — Fol, 

 1869, Beitrag Anat. und Entwick. der Rippenquallen, Berlin, p. i. — Chun, 1880, 

 Ctenophoren des Golfes von Neapel, pp. 290, 295. — ^Jonescu, 1908, Jena. Zeit 

 far Naturw., Bd. 43, p. 685. 



Mnemia, Sars, 1859, Nyt. Magazin for Naturvidensk., Bd. 10, p. 70. 



GENERIC CHARACTERS. 



LobatJE in which 2 thick, aboral, gelatinous, subcorneal projections 

 of the auriculo-tentacular sides of the animal extend upward on both 

 sides of the apical sense-organ, and each gives rise at its pointed aboral 

 end to a simple, flexible tentacle. The 4 meridional subtentacular 

 canals and their ciliary combs extend upward over these projections to 

 their pointed ends. Nvmierous excretory pores containing a red fluid 

 alternate with the combs of cilia and are regularly arranged along the 

 courses of the 8 meridional canals. 



The type species is Eurhamphcsa vexilUgera Gegenbaur, of the 

 Mediterranean and tropical Atlantic, distinguished by its brilHant red 

 fluorescent, probably defensive, substance which is cast out with remark- 

 able suddenness if the animal be disturbed. 



