The Actiniae of the Plate CoUection. 243 



cycles are fertile, witli the possible exception of the two pairs of 

 directives. 



8. JParactis temiicoUis n. s/). 



No. 256 b. Calbiico. 4 specimens. 



Two of the individuals of this species were much more elongated 

 than the others and in these the base had a diameter of 1.3 cm, 

 the column about 0.9 cm, while the height of the cohimn was 3.5 cm. 

 The corresponding measurements of one of the shorter individuals 

 (Fig-. 23) were, diameter of the base 1.6 cm, diameter of the cohimn 

 about the same, height of the column about 1.2 cm. 



The base was adherent and usuallj' somewliat larger than the 

 column. T'liis is almost cylindrical, expanding but slightly toward 

 either end and its walls have throughout the greater part of their 

 extent a considerable amount of consistency. No Verrucae were 

 present, but a number of regularly arranged longitudinal ridges 

 could be distinguished, terminating rather abruptly above about 

 0.5 cm below the margin, the portion of the column above them 

 being quite smootli and its wall markedly thinner than that of the 

 lower part, thus forming what may be termed a capitulum (Fig. 24). 

 The tentacles were numerous, long and flaccid ; they were probably 

 about ninety-six in number and the outermost cycle was situated 

 directly upon the margin. In none of the specimens was there anj^ 

 infolding of the column over the tentacles, the mouth and disc being 

 plainly visible in sonie individuals and readily brought into view in 

 the others by separating the tentacles whicli were matted over 

 them. The disc was quite smooth and the mouth was provided 

 with two moderately distinct gonidial grooves. 



The only traces of color remaining were a slight brownish 

 finge in the tentacles, deepening toward the tips as if these had 

 been specially colored, and a yellowish pigment in the ectoderm of 

 the stomatodaeum. 



Structure. The mesogloea of the column wall is thicker than 

 the ectoderm and its outer surface is raised into numerous ridges 

 and elevations. In the upper or capitular region these elevations 

 are, however, entirely absent and both the mesogloea and the ecto- 

 derm are much thinner than they are lower down. The circular 

 musculature is feeble, the processes which support it being low, 

 unbranched and somewhat distant from one another. At the margin 

 and extending downward a short distance on the capitulum is the 



