THE SYSTEM OF rilYLLOITIORIX.T. 



79 



Tentacles in two orders: 15 — 20 in number, unequal in size. 

 The smaller tentacles stand as a rule alternately with the larger ones, 

 sometimes (in forms with 20 tentacles) forming an inner circle. 

 Pedicels scattered all over body, seldom showing zonal arrangement 

 on ambulacra ; some interambulacra may be naked. 



3. PJiyllophorus limaconotus (Brandt). 



Cladolabcs limaconotos Brandt, 1835 [7]; pp. 57 — 58. 



Holotharia limaconotus SELENICA, 1867 [41] > P- 33 1- 



Orcula limaconotus Ludwig, 1881 [211, P- 5-9- — Lampert, 1885 



[18], p- 169.— Théer, 1886 [46], p. 149.— Ludwig, 1889 — '92 



[26], p. 347- 



Only a single specimen of this species is known from the Boniii 

 or Ogasawara Islands, and that very imperfectly. While in the 

 original description of BRANDT the tentacles were stated to be twenty 

 in number, LUDWIG [21] later found them in the same specimen to 

 be only fifteen. From the bad state of preservation of the specimen, 

 it can not be decided if the absence of any calcareous deposit from 

 the perisomc as well as from the pedicels can be taken as a real 

 character of the species. It seems highly probable that this is not a 

 good species, and had perhaps better be united with Pfiyllophorus 

 truer (= Orcula tenera L ,UDWIG) or some other species of PhyllopJionts. 



4. Phyllophorus Japonicus (v. Marenzeller). 



(Pl. I-, fig- 2 ; textfig. 5). 

 Thyonidium japonicum v. Marenzeller, 1881 [31], p- 134. Taf. 



V. , Fig. 9. 



Phyllophorus japonicus LUDWIG, 1889 — '92 [26], P- 347, Taf. 



VI. , Fig. 16.— MITSUKURI, MS. [32]- 

 Habitat. —Japan : 2 specimens (v. MARENZELLER). 

 Haueda, Tokyo Bay : a single specimen (MlTSUKURl). 



Oft" Tsurugizaki, Uraga Channel : a single specimen (MlTSUKURl). 



