SOME RARE AND INTERESTING SEA ANEMONES FROM PLYMOUTH. 61 



loy the grooves along the insertion of the mesenteries ; there is a tendency 

 to folding, and suckers are present on the upper portion. The capitulum, 

 arising from the scapus by a gentle slope, was retractile, delicate, and 

 smooth. Disk concave ; mouth raised on a cone. Tentacles 16 in 

 number, of fair length and somewhat obtuse ; at first sight there ap- 

 peared to be 17 tentacles, but this was due to the fact that one was 

 bifurcate near the summit. 



Colour. — Investing coat yellowish ; during distension, the mesenteries 

 showed through the integuments as white longitudinal lines. Disk light 

 brown, freckled with yellowish white spots, the eight radii yellowish white 

 with a dark central line ; lips of a darker shade of brown than the disk 

 and with a circle of eight reddish brown spots. Tentacles pellucid, 

 freckled, and indistinctly and irregularly barred and blotched with white, 

 and with a few distinct madder-brown or chocolate spots, which tended 

 to become bars near the tip : at the base of one of the tentacles was a 

 white spot. The colouration of the disk and tentacles harmonized so 

 exactly with that of the sand amidst which the Anemone was living as 

 to render it by no means easy of detection, even when fully expanded. 



Anatomy. — Transverse sections showed muscle characters practically 

 identical with those figured by Haddon. The ectoderm is thin, and 

 broken in many places ; the mesogloea is fairly thick, not very dense, 

 and contains here and there lenticular spaces of no great size ; these 

 stain deeply. The endoderm is of about the same thickness as the 

 mesogloea, and both broaden in the regions between the insertion of the 

 mesenteries. 



The specimen was a female, and the mesenteries were all gonophoric. 

 In the basal muscle the mesogloea shows eight to ten folds on either side, 

 many of them branched ; the longitudinal muscles large and with from 

 eighteen to twenty folds, a number of which are more or less branched ; 

 all are fringed, giving them much the aspect of fern fronds. The ova 

 occurred as more or less compact masses. 



II. Edwardsia claparedi, Panceri, 1869. 

 Haddon (1889) suggested that the Edwardsia which Kingsley found 

 washed up at Torquay in 1854, and which was described by Gosse (1860, 

 p. 262) as " ? Edwardsia heautemfsii (Quatref.)," may have been 

 E. claparedi. After stating his belief that E. callmiorpha, Gosse, is 

 identical with E. beautempsii, Quatrefages, Haddon enumerates the 

 points of difference between that species and the specimen in question as 

 given by Gosse, and concludes : " In the above particulars this Edwardsia 



