tEUCOtSACUS ORTHODOCÜS. 3Ô 



The first specimen (Sei. Coll. Mus., Sp. No. 230) was 

 discovered among the trophies of a long-lining expedition to 

 Döketsba, which I had undertaken on Aug. G th, 1894, together 

 with Professor Mitsukuei. I consider the exact date as not 

 unimportant owing to the fact that the specimen contained larvic 

 in different stages of development. It was found attached to a 

 dead Caryopliyllia-VikQ coral in company with a specimen of 

 Lanuginella pupa, and is shown in PI. Ill, fig. 14, in natural 

 size. The body is of an ovoid shape, with the inferior narrower 

 end continued into a stalk of moderate length. Total height, 11 

 nnn.; greatest breadth, (j.ö mm. The upper rounded end bears, 

 somew^hat to one side of the center, a roundish osculum of 1.5 

 nnn. diameter. The stalk is laterally compressed, measuring in 

 breadth 2 mm. in one direction and only 1 mm. in another ; it 

 expands at the lower end into a small basal disc. The sponge-wall 

 is about 1.5 mm. thick at the part where the body is broadest ; the 

 oscular margin is thin and simple (fig. 15). So far as can be made 

 out by cutting open the wall, the gastral cavity seems to extend 

 downwards for a considerable distance into the stalk. 



The second specimen (Sp. No. 438) was obtained also by 

 me, Aug. 12 th, 181J5, at a spot in or near Döketsba l)ut which 

 could not be precisely located on account of the foggy weather. 

 It is a fragment representing the upper part of an individual 

 probably similarly shaped, but somewhat larger than the first 

 specimen. It bears a roundish osculum of 2 mm. diameter. The 

 wall is nearly 2 mm. thick in the thickest part. 



In general appearance both specimens remind one of Lanu- 

 (jincUa pupa, long known from the Atlantic and which also occurs 

 in the Sagami sea. The external surface is perfectly smooth. 

 Examined under a hand-lens the apertures of incurrent canals 



