BIBLIOGEAPHY. 93 



8-11, Thaumantias hemisphosrica, from Miiller; 5, 6, 7, are copies of the "Medusa 

 cruciata," of Forskal. In plate xciv, figs. 4, 5, are copies of the figures given by Baster, 

 of the Medusa which has received the name of CalUrhoe Basteriana. Plate xcv, figs. 

 1 and 2, are the j^quorea mollicina ; fig. 4, Mesonema ccelum-pensile ; and fig. 3, ^quorea 

 Forskalina, all copied from Porskal. 



1809. Peron et Lesueur. « Tableau des Caracteres generiques et specifiques de toutes les especes de 

 Meduses connues jusqu'k ce jour," in the ' Annales du Museum d'Histoire Naturelle,' 

 vol. xiv. 



A standard paper. Unfortunately the plates and figures referred to in this valuable memoir 

 have never been made public, so that it is beyond the power of the British naturalist to 

 determine the species mentioned as inhabitants of the Channel, for the descriptions are 

 too often insufficient. The following genera of naked-eyed Medusee, are characterised 

 for the first time in this paper : Eudora, Berenix, Orythia, Favonia, Lymnorea, Geryonia, 

 Carybdea, Phorcynia, Eulimenes, Mquorea, Foveolia, Pegasia (?), CalUrhoe, Oceania, 

 Aglaura, Melicerta (?), Euryale. The names of the species will be found in the table 

 which I have constructed from Lesson, further on. An issue of the original plates would 

 be a great boon to science, as few naturalists have had such opportunities of observing the 

 Medusae in all parts of the world, 



1816-18. De Lamarck. ' Animaux sans Vertebres.' 



The Medusae are described at second-hand. The naked-eyed' species are arranged under 

 the genera Eudora, Phorcynia, Carybdea, Mquorea (?), CalUrhoe, Orythia, and Diamea. 

 Peron and Lesueur are evidently the chief source of the descriptions. 



1821. A. de Chamisso, and C. G. Eysenhardt. "De Animalibus quibusdum e Classe Vermium 

 Linneana in circumnavigatione Terrae, auspicante Comite N. Romanzoff, duce Othone 

 de Kotzebue, annis 1815-18 peracta, observatis ;" in the ' Acta Academise Naturae 

 Curiosorum,' vol. x. 



Several Medusae are represented in the plates to this paper. Of these, one, the Geryonia 

 tetraphylla, is a naked-eyed form, allied to our G. appendiculata, and resembling it 

 in having eight tentacles alternately differing in size. Their structure is not given. The 

 extremity of the peduncle is represented as having a round orifice, which is a mistake, as 

 in the description, the peduncle is said to be " bipoUicaris, cylindricus, flexilis, apice 

 (ore) truncato dilatato quadrivalvato membranaceo, maculis quatuor viridibus notato." 

 It inhabits the Indian Ocean. (Loc. cit., t. xxvii, f. 2.) 



The " Medusa campanulata" of this paper (pi, xxx, f. 1) seems to me to be a mutilated 

 animal, doubtfully of this division, and the M. mucilaginosa is possibly a mutilated 

 Polyxenia. Both are from the Pacific Ocean, and the imperfection of the drawings is due 

 to the specimens, and not to the describers, as they expressly state their doubts respecting 

 the generic affinities of both forms, and suggest the necessity of fresh observations. 



1824. Quoy and Gaimard. 'Zoology of Voyage of the Urania and Physicienne' (under Freycinet). 

 Plates Ixxxiv and Ixxxv are devoted to the Medusae. 

 Of naked-eyed species there are figured JEquorea grisea (Admiralty Isles), ^quoreq 

 cyanogramma, from the same locality, JEquorea punctata, from between the Philippines 

 and Sandwich Isles, and j/Equorea semirosea, from New Guinea; all species well marked 

 by peculiarities of colour. Dianaea balearica (a Geryonia ?), from the western Mediterranean, 

 a two-tentaculated species, remarkable for its thick peduncle (?). Diancea endractensis, 

 a six-tentaculated species of a reddish tinge, from New Holland. In neither the figures 

 nor descriptions of these are the ovaries definitely stated. The introductory remarks show 

 that the authors did not very clearly comprehend what they saw. 



1826. Risso. ' Histoire Naturelle de I'Europe Meridionale.^ 



The Medusse of the neighbourhood of Nice are enumerated in the fourth volume, including 

 several known naked-eyed species. The author's knowledge appears to have been very slight. 



