470 THE VOYAGE OF H.M.S. CHALLENGER. 



abundant on the surface. Minute, quite transparent, masses of jelly were frequently- 

 picked up on the surface, which when examined under the microscope were found to 

 enclose great numbers of Coccospheres, and occasionally Rhabdospheres and other foreign 

 particles. These masses of jelly at once recalled the Myxobrachia of Haeckel, but it 



Fio. 173. — (Procalistes) Taonius suhmii, Lankester. 



A. Youngest specimen of (Procalistes) Taoniiis suhmii, Lankester, drawn by R. von Willemoes Suhm from a living 



specimen; magnified 25 diameters, a, The long "arms" or processes of the fore-foot; b, the six small suckers, 

 representing the eight short processes of the fore-loot of a typical Decapod ; c, the elongated neck ; d, the pedunculated 

 eyes ; /, the funnel or siphon ; g, the anal process seen through the transparent mantle ; k, the median posterior process 

 of the body ; I, the lateral fins attached to the same ; m, the buccal apparatus ; », the oto-cysts ; o, the intestine. 



B. One of the suckers of the long arms, more highly magnified. 

 C". A portion of the lingual ribbon, more highly magnified. 



was impossible to make out in them the structures which that naturalist has described. 

 R. Hertwig has since- shown that the various supposed species of Myxobrachia are in 

 reality curious malformations of Thalassicolla sanguinolenta. 1 



1 Hertwig, R., Der Organismus der Radiolarien, Jenaische Denkschriften, Bd. ii., p. 129, 1879. 



