50 



the hydranths are also shorter, and the female gonopliores do not have pointed apices. 

 Though the species Identification can not be made with certainty, owing to the small 

 number of the specimens, it is probabiy a variety of C. pusilla (Inaba fig. 4).' (Inaba 1890.) 



Cladocoryue pelaglea AUman 1876. 



Cladocoryne pelagica. AUman 1876a p. 255 tab. 10 fig. 6—7. 

 Nr. 2. Cladocoryne pelagica. Inaba 1890. 



Für Japan neu. 



,Nr. 2. Cladocoryne pelagica AUman. 



Trophosome. Sterns up to 5 mm, fine, without or with few branches. Perisarc with distinct 

 rings at the base of stems. Hydranth coraparatively short with long tentacles; 4 — 6 un- 

 branched tentacles forming a circular row around the mouth; branched tentacles forming 

 three or four circular rows, with 3—5 in each row; each tentacle with a knob at the end. 



Gonosome. Gonophores in the axils of the branched tentacles, with very short stalks. 



Colour. Hydranths rose-coloured ; perisarc reddish brown. 



Locality. Cove ofBishamon, 0,5 m below surface, on terminal branchlets of Sargassum ; 

 entrance of Moroiso Cove, about 5 m, on root-parts of Sargassum, Sagami Sea. 



Date. Gonophores found in January, 1889. 



The foregoing description was published in no. 7 of the Zoolog. Magazine. 1 have 

 since been able to see Allman's ,Diagnoses of New Genera and Species of Hydroidea" 

 and found that his description and figures coincide with my specimens: hence the deternii- 

 nation as C. pelagica. 



Allman has distinguished this species from C. floccosa by its smaller size and the 

 presence of distinct rings at the base of the stem. A minor difference is that in C. floccosa 

 there are, according to Du Plessis, white spots füll of nettle-cells between the oral ten- 

 tacles, while in C. pelagica there are no such spots, or if groups of nettle-cells are present, 

 there are not more than five or sis of them. 



Allman's supposition that the gonosome is probabiy medusoid is erroneous. This 

 error was due to the bad preservation of his specimens and the unripe condition of the 

 gonosome observed by him, as may be seen from his figure." (Inaba 1890.) 



Fam. Pennaridae. 



Penuaria Cavoliuii Ehrenberg 1834. 



(Fig. 5-6.) 

 Nr. 32. Pennaria sp. Inaba 1890 fig. 89—91. 

 Von P. Cavolinii unterschieden dadurch, daß die kleinsten Hydranthen-tragenden Rarauli 

 nur an der Basis geringelt sind, während sie es nach Allman (1872) der ganzen Länge nach 

 sein sollten. Dies variiert indessen zufolge Neapeler Vergleichsmaterial sehr stark. 

 Für Japan neu. 



,Nr. 32. Pennaria sp. (Inaba Fig. 89, 90, 91.) 

 Trophosome. Stem 100 mm high, slightly curved backwards, and bearing regularly alter- 

 nating branches, which stand out obliquely and also somewhat forwards, each brauch 

 bearing six or seven branchlets on its upper side. There are two or three rings on the 



