PLATE XVI. 



Drawn by me from life in Ceylon, December 1881. 



Lychnagalma vesicular ia, n. sp. (p. 253). 



Fig. 1. The complete corm in a living state, quietly floating on the surface, with expanded 

 stem and tentacles. The biserial nectosome is composed of a small apical 

 pneumatophore (p), and ten pairs of opposite nectophores (n). The long 

 siphosome (the lower part of which is truncated) is densely covered with 

 bracts and bears numerous loose cormidia. The hydrostatic terminal ampullae 

 of the tentilla are directed upwards. 



Fig. 2. The same corm, half dead, in a highly contracted state, after the detachment of 

 most of the appendages ; slightly magnified, a, Trunk ; i, buds of nectophores ; 

 p, pneumatophore ; b, bracts ; s, siphons ; q, palpons ; t, tentacles. 



Fig. 3. A portion of the siphosome ; slightly magnified, a, Trunk ; b, bracts ; sm, 

 siphons ; ss, suctorial disc of the mouth ; g, gonodendra. 



Fig. 4. Pneumatophore. pp, Pigment-cap (mitra ocellaris) ; py, pylorus infundibuli ; 

 pq, radial pouches of the pericystic cavity ; pr, radial septa between them ; 

 i, buds of nectophores ; a, trunk. 



Fig. 5. Lateral view of a nectophore (from the left side), np, Pedicle ; el, left radial 

 canal ; w, subumbrella. 



Fig. 6. Dorsal view of a nectophore. v, Velum ; k, four cnidonodes on its basal insertion 

 (rudimentary tentacles). 



Fig. 7. Lateral view of a bract (in profile), be, Brae teal canal. 



Fig. 8. Dorsal view of a bract (from above), be, Bracteal canal. 



Fig. 9. A single tentillum. ts, Pedicle ; th, involucre ; ik, cnidoband; to, hydrostatic 

 terminal ampulla ; x, oil-globule in its apex ; te, corona of eight (contracted) 

 radial filaments around its base. 



