38-i Transactions. 



7. Sagartia vagrans (sp. iiov.). 



Pedal-disc. — The ectoderm is thick, and presents no unusual feature. 

 The mesogloea is much " vacuolated," and the endoderm is thin. 



Column. — The colour is dirty-white and ohve-brown in alternate longi- 

 tudinal lines, or the whole may be dirty-white, or grey, or even pink. There 

 is a circular muscle in the wall throughout its entire length carried on regular 

 folds of the mesogloea. 



Tentacles. — These are very fine and threadUke. Their colour is salmon- 

 pink, though in som.e specimens they are white. They are of different lengths 

 in the different cycles. There are several cycles, but the tentacles are so 

 numerous and crowded that it is impossible to make out how many cycles 

 there are. Judging from cross-sections I should say there are four cycles. 

 In structure the tentacles resemble those of the last species [S. nutrix), 

 but there is a specially well-developed iiervous layer. 



Oral Disc. — Colour olive-brown generally, but there is considerable 

 variation. The structure is identical with that of the tentacles, and closel}^ 

 resembling the same part of S. nutrix. 



Stomodceum. — The colour is a rich pink, with darker-coloured red longi- 

 tudinal lines. The inner edge of the mouth is also red. The stomodaeum 

 is freely everted, when the red lines, together with the edge of the mouth, 

 form a rosette-like design on the disc. There are 2 siphonoglyphs. 



Sphincter Muscle. — This is mesogloeal in character. There is only a slight 

 thickening of the mesogloea under the bases of the tentacles, but the whole 

 body-wall has the character (more or less) of a diffuse mesoglceal sphincter. 

 In contraction the tentacles and oral disc are much infolded, the wall com- 

 pletely overarching them. 



Mesenteries. — There are 48 pairs, 12 pairs being perfect, the arrangement 

 of the cvcles being 6 -F 6 -f 12 -h 24 = -18. Two pairs are directives.. 

 (Plate XXVII, fig. 2.) 



Gonads. — None were present in my specimens. 



Acontia. — These are extruded through lens-shaped cinclides, which are 

 invisible except at the time of discharge. These cinclides appear to be on 

 the white lines only, and to be limited to a zone encircUng the middle third, 

 of the body. 



Locality. — Professor H. B. Kirk has brought me specimens from PHm- 

 merton. I myself have found the species in large numbers on the breast- 

 work of the Thorndon Esplanade, Wellington Harbour, and on the piles 

 of the baths. This anemone adheres so strongly that it is impossi-ble to 

 remove it without damage. It is attached also to shells of mussels, and this 

 makes it possible to obtain good specimens. 



Habits, dc. — This animal lives well in captivity. Some that I kept in 

 an aquarium wandered about at will. 



Size. — My largest specimens were 40 mm. high and 20 mm. in diameter, 

 but I am told there are larger ones on the piles of the Queen's Wharf, Wel- 

 lington. 



Affinities. — Probably closely allied to *S. cdbocincta. 



Distribution. — Of the genus — As above. Of the species — Plimmerton. 

 (H. B. Kirk), AVellington Harbour. 



Genus Thoe (Wright). 



On page 122 of the " Actinologia Britannica," Gosse, after referring 

 to the genus Sagartia, says, " A group less typical I consider to be formed 



