46 MKS. LEONORA J. WILSMORE ON SOME 



the imperfect mesenteries have no longitudinal retractor mnscles, thai their 

 entire muscle and a corresponding width o£ muscle on the perfect mesenteries 

 is parietal, and that therefore in the lower part of the scapus in PeacUa 

 hastata parietal muscle alone is present. 



In the size of the perfect mesenteries, in their attachment to the oesophagus, 

 and in their relative width in the subcBsophageal region, Peaclda Mlli 

 differs from FeacJiia hastata. In FeacJiia hastata the pair 6 6 alone, the 

 the last pair formed, " deviennent libres dans les deux tiers inferieures de la 

 region oesophaoienne " (15). In that species towards the end of the scapus 

 the pair 4 4 does not form a group with 5 5 and 6 6, but has already 

 diminished to the size of the imperfect mesenteries. Faurot photographs (15) 

 show that at a lower level still, roughly corresponding to fig. 7, the pairs 5 5, 

 6 6 in Peaclda hastata have also diminished to the same size as 4 4. In Peachia 

 hilli these pairs retain their relatively greater width well into the physa. 



Professor McMurrich (13) has altered the generic characters as defined 

 by Haddon to include Peachia horeni. Although, on account of his unwilling- 

 ness to mutilate his only specimen, he has not been able to describe the 

 species in detail, there is no doubt that it is a totally distinct species from 

 Peachia hilli. In Peachia koreni the conchula is as large as the tentacles, 

 of which there are only eight, though all six pairs of perfect and four pairs 

 of imperfect mesenteries are present. There is also in the American form no 

 distinction into capitulum, scapus, and physa. This example of Peachia 

 horeni may be a young form, but, if so, its tentacles and mesenteries are 

 developino- in reverse order to tliose of the larval form of Peachia hilli. 



Peachia hilli is the second species of this genus recorded from the Pacific. 

 The first, Peachia camea (6), found on the beach, Dunedin, New Zealand, 

 differs from Peachia hilli in being flesh-coloured. Only the external 

 characteristics of this anemone have been given by Hutton, and since these 

 apply equally well to the genus Halcampa as to Peachia, its position is quite 

 uncertain. Another form from the Southern Hemisphere, Peachia antarctica 

 (South Greorgia), was classed as a Peachia by PfefEer on its external 

 characters only, in his " Zur Fauna von Siid-Georgien," Jahr. Hamb. 

 Anstalt, vi. Jahrg. 1888. In 1898 (krlgren found that this was in reality 

 a Scytovhorus and renamed it Scytophorus antarcticus (23). 



Phellia browni. (PI. 5. figs. 9-13.) 



Form (PI. 5. figs. 9 & 9 a). — Single, conical, fixed ; scapus and almost the 

 whole of the capitulum thickly covered with large yellow, brown, and white 

 grains of calcareous sand ; beneath these lies a thick coating of transparent 

 siliceous grains. This sand forces itself irregularly into the column-wall, 

 but does not penetrate the surface, so that the indentations in which it lies 

 are completely lined by ectoderm coated by mucus. The grains are best 



