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tut : cm. trom th< tl pole. There is evidently then, a clear distinction of the two sets 



of mesenteries, the brachycnemes and the macrocnemes, but whether the quartette arrangement 

 is manifested bj the alternate mesenteries of each sel being shorter, I could nol determine, 



although it' present th<- difference in length must be comparatively slight. 

 lt is noticeable, too, that a marked diminution in the length of the 

 mesenteries as the mid-dorsal line is approached, is but slightly pronounced, 

 the great majority of the macrocnemes extending to the distance hom 

 the aboral pole mentioned above. In order to make clear th<- arrangement 

 which may bc supposed to exist from the observations recorded above, 

 a diagram of what I take to be the condition is appended (Text figureV . 

 but it must be remembered thal this represents onlj the arrangement on 

 the strii> studied by means of sections and that the relativa lengths of the 

 mesenteries of the two groups are conjectural. It may be added that in 

 the strip examined sixteen mesenteries wen- counted, which would give 

 12S as the total number, and this agrees well with the estimated number 

 of tentacles 



In one important particular the mesenteries differ trom those of 

 other forms that have been examined, and that is in all the mesenteries 

 with the exception of the directives being fertile. The species is hermaphroditic 

 both ova and spermatozoa occurring in the s;ime mesentery, and they are 

 found as well on the brachycnemes as on the macrocnemes. This is a 

 marked departure trom what is found in other Cerianthans. but il does 

 not seem to be a peculiarity which demands the recognition of a new 

 nus, especially as but a single example of the species, and that not in 

 the best state of preservation was available for study. 



Fig. V. ..... . 



lüagmni showing thu ' idciltitv this torill with KWTJETNIEWSKl's LcriCllltllUS O »l/>OllCHSlS 



the mesenteries w j th some hesitation, since in the description given by that author only 



external characteristics are for the most part referred to. The general 



dimensions of the two forms are, however, very similar, in both a Iarge number of mesenteries 



extend to the vicinity of the aboral pole, and both rome from the same locality. These particulars 



m to warrant the assumption of their identity. 



2. Cerianthus sulcatus Kwietniewski. 



Synonym: Cerianthus sulcatus n. sp. Kwietniewski. 1S98. 

 Stat. 1S1. Amboina anchorage, reef. 1 ex. 



'ïeneral Form. The single example il'l. I. lig. 2), preserved in alcohol, had 



nuch the same form as C. amóonensis, that is to say, it was rather short in proportion to its 



h, with a constriction about '/■ cm - below the margin, enlarging below this to almost the 



diameter of the margin and then tapering graduall) to the rounded aboral extremity. The 



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