42 Coelenterata. 



Couchii (siphonoglyph feebly differentiated, musculature weakly developed, no 

 sphincter, the whole endoderm crowded with zooxanthellre), Phellia vestita (no 

 zooxanthellae) and Palythoa canariensis. The actinian fauna of the Canaries 

 is most nearly related to that of the Atlantic coast of Europe and the western 

 Mediterranean, but its independence is shown by the exclusive occurrence, in 

 the Canaries, of Ph. vest., Euphellia cinclidifera and Palyth. canar. The author 

 also describes Bolocera norvegica n. from the west coast of Norway. This is 

 the only sp. of the genus in which siphonoglyphs are wanting, a character in 

 which it agrees with Boloceroides. 



Stuckey( 2 ), in describing Leiotealia Thompsoni, states that the column wall 

 is thrown into close parallel ridges, running round the body; each of these is 

 pleated so regularly as to present the appearance of longitudinal ridges. The 

 wall thus looks as if covered with numerous papillae into each of which the 

 mesoglcea runs, often being branched or folded in them. Occasionally the folds 

 come together and fuse so that there are deep pits in the mesoglcea lined with 

 ectoderm. In the ccelenteron there are young individuals up to a stage showing 

 12 mesenteries. 



Stuckey( 3 ) describes Edwardsia tricolor (nom. nov. for elegans] and ignota n. - 

 Antheadse - - (1) Actinia tenebrosa has no sphincter muscle but there is about 

 one third down the column a stronger development of the endodermal muscles 

 which probably fulfils the function of a sphincter. The mesenteries vary much 

 in number and arrangement; the normal number appears to be 48 pairs, but 

 in one specimen there are 56, of which 15 (instead of the usual 12) reach the 

 stomodseum. There is a superfluous development of those of the 3rd cycle; 

 members of the same pair are sometimes unequal. (2) Ammonia olivacea. 

 Sagartidse (1) Sagartia albocincta [s. Stuckey( 2 )], nutrix n. (probably viviparous), 

 vagrans n., (2) Thoe albens n., (3) Halcampactis dubia n. Paractidse -- (1) Paractis 

 ferox n., (2) Tealidium cinctnm n. Corallimorphidse (1) Corynactis Haddoni, 

 gracilis, mollis and albida n. A specimen of C. Hadd. was fixed to a stone 

 on which it spread out forming an elliptical much flattened disc the length of 

 which was 4 or 5 times the diameter of an ordinary specimen while the breadth 

 was half the length. In 3 days the wall became thin and split at one extre- 

 mity of the minor axis, the free edges retreated towards the vertices and curled 

 inwards; a second split occurred in such a way that one vertex of the ellipse 

 became cut off, the two edges curled inwards and finally coalesced. Similarly 

 another split caused the remaining portion to become divided into two. The 

 author calls this process, which occupied altogether 7 weeks, > lateral fission*. 

 A bud appeared on the foot of the 3rd daughter anemone and was cut off 

 from it by means of a constriction (pedal gemmation). During the process of 

 lateral fission above described ova were released and developed into embryos 

 */3 mm. high. Phyllactidae Cradactis magna n., plicata (nom. nov. for Oulactis 

 plicatus] ; on the under side of the oral disc (that is, the roof of the coelenteron) 

 of p. there are spaces , apparently brood-pouches , each of which encloses a 

 developing ovum. Bunodidse - - (1) Bunodes aureoradiata [seeStuckey( 1 )], incon- 

 spicua (nom. nov. for Phymactis inconspicua). (2) Leiotealia thompsoni [see 

 Stuckey( 2 )]. Aliciidse - - Phlyctenactis n. retifera n. (mesoglcea of the tentacles 

 highly reticular) and Morrisonii n. - - See also Marion and Roule( 3 ). 



WilsmorG describes Zoanthus 3 n. and Gcmmaria 1 n. In Z. similis n. male 

 and female individuals are present in one colony. In Z. pigmentatus n., abun- 

 dant yellow brown pigment granules are present in the mesoglrea of the column 

 wall; zooxanthellse are also abundant in this and in the other two species of 

 Z. in which there is very little pigment. The relationship between zooxanthellse 



