PLATE XVII. 



Drawn from life by me in Ceylon, in January 1882. 



Crystallodes vitrea, n. sp. (p. 222). 



Fig. 1. Lateral view of the complete corm (from the left side), whilst quietly 

 floating on the surface, with horizontal trunk. The pneumatophore 

 (p) is directed upwards. One series of nectophores (n) is dorsal, 

 the opposite ventral. Five cormidia depend in the ventral median 

 line of the siphosome, which is entirely covered with bracts (6), 



Fig. 2. Dorsal view of the same corm. Characters as in fig. 1 , 



Fig. 3. Ventral view of the same corm. Characters as in fig. 1 , 



Fig. 4. A single cormidium. sm, Siphon ; sh, liver; sr, proboscis ; m, muscles ; 

 so, mouth ; t, tentacles ; q, palpons ; b, bracts ; h, androphores ; f, 

 gynophores, ....... 



Fig. 5. A single tentillum. ts, Pedicle ; th, involucre ; tk, cnidoband ; kg, 

 large basal cnidocysts ; km, small paliform cnidocysts ; tc, lateral 

 horns ; ta, terminal ampulla, ..... 



Figs. 6-13. Different views of nectophores, . 



Fig. 6. Dorsal view of two opposite nectophores. a, Trunk (in transverse 



section) ; cd, dorsal canal ; el, left canal ; ex, right canal. 



Fig. 7. Apical view of a nectophore. np, Pedicle of insertion. 



Fig. 8. Basal view of a nectophore. v, Velum. 



Fig. 9. Oblique ventral view of a nectophore. 



Fig. 10. Oblique dorsal view of a nectophore. 



Fig. 11. Apical view of a young nectophore. 



Fig. 12. Lateral view of a young nectophore. w, Subumbrella. 



Fig. 13. Oblique lateral view of a nectophore. 



Figs. 14-16. Different views of bracts. 6c, Bracteal canal, 



Diarn. 



2 



2 

 2 



20 



200 



4 



