Macuire—WNotes on Certain Actiniaria. Gon 
endodermal muscle of the body-wall is well developed; that of the 
tentacles and disk is not well marked. 
Mesenteries.—The arrangement of the muscles has already 
been described. The central glandular streaks of the mesenterial 
filaments are well developed; they contain large glandular cells. 
both granular and homogeneous, and thick walled stinging cells, 
The ciliated lateral streaks are poorly developed. The acontia, 
which are borne like the mesenterial filaments by the primary 
and secondary mesenteries only, are fairly abundant. In trans- 
verse section, they are nearly circular; they show numbers of 
very large thick-walled stinging cells, and a few fine granular 
gland-cells. 
The gonads are found on the first cycle of mesenteries, between 
the retractor muscles, and the mesenterial filaments ; they have the 
usual structure. 
Two points of interest to be noted in this species are the 
coalescence of some of the mesenteries, and the granular bodies in 
the mesogloea and endoderm. With reference to the coalescence 
of mesenteries, this condition has been described and figured by 
Rt. Hertwig (Report on the “ Challenger’ Actiniaria, 1882, p. 83, 
plate vii., fig. 2) in the primary mesenteries of Chitonanthus 
(Phellia) pectinata Fusion of the secondary mesenteries is 
described by the same author (loc. cit., p. 37, pl. vill., fig. 5) in 
Tealia bunodiformis. In both these cases, fusion occurred between 
mesenteries of the same pair, not of different pairs as in this 
species. 
Hertwig regards it as a temporary condition; and it seems 
probable that it must be so, as in Phedlia Sollasi the primaries are 
alone fertile; and in the larger specimen containing gonads, the 
mesenteries were not fused. Coalescence of primary mesenteries 
(directives) with each other, and with several pairs of secondary 
mesenteries, has been described and figured in Bunodes thallia by 
G. Y. and A. F. Dixon (Proceedings, Roy. Dubl. Soc., 1889). 
A similar condition has also been noted by G. H. Parker 
in Metridium marginatum (Bull. Mus. Comp. Zool., Cambridge, 
Mass., xxx.,.1897, p. 267). 
1 This species is certainly not a Phellia, as Hertwig supposed. Haddon regarded 
it as a Hormathia; but MeMurrich (Proc. U. 8. Nat. Mus., 1893, pp. 189, 209) 
places it in his new genus Chitonanthus. 
