♦ Haddon — Note on Halcampa chrysanthellum, Peach. 9 



niinently marked and coloured. As they are prolongations of 

 those mesenterial chambers which have no secondary mesenteries 

 (see fig. 4, p. 12), and as one of them is situated at each end of the 

 slit-like mouth, they therefore correspond to the primary tentacles 

 of other Actiniae. The tentacles of the second series (secondaries) 

 usually bend outwards and downwards, being slightly recurved at 

 the tip. Their colouration and pattern is often paler and more or 

 less obscure. 



The colour of the scapus is usually whitish, sometimes tinted 

 with buff, and rarely opaque orange. As previously noted, when 

 mature, the ovaries shine through the translucent body with a 

 creamy orange colour. 



The insertions of the mesenteries appear externally as longitu- 

 dinal white lines : between each alternate pair of mesenteries there 

 is a pair of small mesenteries, which appear on the outer surface as 

 two thin white lines. This explains Peach's account of the stripes 

 of the column, the " stripes " being the darker, i. e. translucent, areas 

 between the mesenteries. The transverse stripes noticed by Peach 

 are merely external corrugations due to the contractibility of the 

 body. (See fig. 2, p. 12.) The eapitulum is subject to considerable 

 variation in ornamentation : usually it is buff, sometimes with a 

 brown band. The white or pale-yellow bracket-marks alluded to 

 in my former Paper appear to be very constant in their appearance. 



It is, however, in the disc and tentacles that the greatest amount 

 of variation occurs. I have therefore briefly described a number 

 of variations to prove how careful one should be in laying any stress 

 upon colour or markings, in dealing at all events with this species. 



1 . Disc opaque white. Tentacles very pale buff, with five paler 

 bands ; the lowermost two are waved or M -shaped. White bracket- 

 marks externally at base of tentacles. 



2. Disc pale lemon-yellow. Tentacles very pale buff, with five 

 white bands, and some indistinct brown bands, which are much 

 more distinct on the six primaries. A brown band round the 

 eapitulum, and pale bracket-marks. 



3. Disc rusty colour, with distinct paler radiating lines (mesen- 

 teries), forming twelve dark-coloured wedges. Tentacles of same 

 rusty colour, with five pale bands, the four upper of which are 

 straight, and the lowermost is V-shaped. The inverted triangular 



