PLATE XXIV. 



The figures of this Plate were drawn by me from living specimens in the Canary Island Lanzerote, 



January 7, 1867. 



Cannophysa murrayana, n. sp. (p. 324). 



Fig. 1. An adult corm, with large ripe gonodendra of a golden colour attached to the yellow 

 trunk near the base of the rose-coloured siphons. The cylindrical trunk is 

 twisted in a dexiotropic spiral. The apical pneumatocyst is rather expanded. 

 The animal reposes quietly on the bottom of the glass vessel. 



Fig. 2. The same corm, in the highly Contracted state, seen from above, p, Pneumatocyst ; 

 g, gonodendron ; s, siphon. 



Fig. 3. A young corm, without gonodendra, in the expanded state. The rose-coloiunl 

 siphons arise from the yellow trunk at equal distances, a, Trunk ; p, pneu- 

 matophore ; s, siphons ; t, tentacles. 



Fig. 4. The pneumatophore. po, Apical stigma ; pp, pigment-cap (mitra ocellaris) ; pf, 

 pneumatocyst filled with gas ; pd, tapetum endocystale ; pv, hypocystic villi ; 

 i, buds ; s, siphons. 



Fig. 5. Oblique apical view of the same pneumatophore. po, Apical stigma, open ; pp, 

 mitra ocellaris ; pm, radial fibres of the muscular dilatator ; pn, circular fibres 

 of the muscular sphincter ; pz, hypocystic villi ; p, pneumatocodou. 



Fig. 6. A group of hypocystic villi. Each villus consists of a few gigantic exoderm 

 cells and a covering epithelium of numerous small ciliated entoderm cells (pz). 



Fig. 7. Three greenish exoderm cells of the pneumadenia, taken from the endocystic 

 tapetum. 



Fig. 8. A single tentacle, arising from the base of the siphon (s). ts, Tentilla; te, simple 

 terminal appendage of the tentacle (without tentilla) ; a. stem. 



Fig. 9. A single tentillum. ts, Villi of the pedicle ; ta, terminal ampulla ; tf, its distal 

 appendage ; tc, lateral horns. 



