32 



Part first. 



B. Ctenophora (p. 71), have each eight ribs of moving paddles, 



which give the effect of running beads of hght with rainbow 

 colours. Beroe (fig. 85), one to three inches long, shaped 

 like a bishop's mitre; a most delicate pink. Eucharis (fig. 86), 

 much broader base with rounded projections, quite trans- 

 parent. Callianira (fig. 87), small with long tentacles. Venus' 

 Girdle (C^s/ws, fig. 88), a transparent ribbon about an inch broad. 



C. Siphonophora (p. 70), generally like transparent filmy flowers 



on a central stalk: Physophora (fig. 89), Forskalia (fig. 92), 

 Velella (fig. 91), Hippopodhis (fig. 90), etc. 

 Tunicates (p. 99). Salps, partly smaller animals united together 

 in a chain (figs. 93 and 94), and partly single larger individuals 

 (fig. 95). Each animal is a transparent swimming barrel, 

 the globular brown kernel at one end being the intestines etc. 

 *Pyrosoma (fig. 96), a transparent frothj^ cylinder up to eight 

 inches by three. 

 Molluscs. A. Heteropods (p. 95). Pterotrachea (fig. 97), has 

 a long proboscis and sculls itself rapidly on its back. Some- 

 what similar is the allied Carinaria (fig. 98), less transparent 

 and with a small shell. B. Pteropods (Sea-butterflies, 

 p. 95), flap a pair of transparent wings' {Hyalea, fig. 99). 

 Besides these pelagic animals there are outside the cylinders 

 various small Odopods (p. 89) and crawling Molluscs, such as 

 *Dons (fig. 100), as large as a thumb, a tuft at one end, *Aeolis 

 (fig. loi), *Tethys (fig. 102), as large as a hand, spotted with red 

 and brown. 



Of Crustaceans various kinds of shrimps (see Tank 23). 



Fig. 80. Pdagia noctiluca, 

 1/3 nat. size. p. 68. 



Fig. 79. Cannarina hastata, 

 1/2 nat. size. p. 68. 



