550 OLWEN M. REES, 



C. australis, Haddon and Duerden, 1896 (Australia). Anatomical data from 



Haddon and Duerden. 



Sphincter weak ; mesogloeal processes barely branched. 



Parieto-basilar muscle very strong. 



Mesogloea thicker than ectoderm above, thins downwards. 



No distinct grooves. 

 C. Haddoni, Farquhar, 1898. 

 C. gracilis, Farquhar, 1898. 

 C. mollis, Farquhar, 1898. 

 C. albida, Stuckey, 1909. Stuckey thinks all four may be varieties of one 



species. Occur in New Zealand. The sphincter is practically absent. 



C. glohulifera, Ehrenberg, 1834. ^ 



^ rr ■ • -IT -n . r.r~.^ Thcsc spcclcs do not appear to have been. 



C. Hertiviqi, Haddon, 1893. } ,. , • „ 



studied anatomically. 

 C. annulata, Verril, 1869. J 



Aureliania regalis (Andres). 

 Sub-Family. Aurelianid^. 



The following is the definition adopted by Dr. F. Pax in Kiikenthal, 

 Handhuch der Zoologie : — 



" Basilar muscle, ciliated bands, one siphonoglyphe, very strong cir- 

 cumscribed sphincter, longitudinal muscle of septa also very strong. 

 Simple and branched tentacles, in some cases placed on projections of 

 the surface of the mouth disk. Two or more tentacles communicate 

 with each exocoel." 



Andres' definition is formed from external characters. " Base adher- 

 ing, column obconical, not tuberculate, imperforate. Tentacles arranged 

 in radial series, numerous and detached, not simple, but swollen at the 

 apices ; the knobs usually spherical, sometimes giving rise to buds. 

 Colour yellowish red. Found in sand and on rocks." 



The Genus, Aureliania. 



" Form : Base adhering, wdde. Column abconical with minute 

 suckers secreting a membranous investment. Tentacles numerous, 

 arranged in radial series of two tentacles each, and at the same 

 time forming four circular cycles. Each of the cycles has a different 

 number of tentacles. The form of the tentacle is tubercular, swollen at 

 the apex, bilobed. Peristome convex, radially grooved. Colours yellow- 

 ish orange, tinged with vermilion." The above is a translation of the 

 description of the genus Aureliania given by Andres in L'AUinie. He 



