PLATE XXVII. 



Figs. 1-12 of this Plate were drawn by me from life in Ceylon, in December 1881. 



Figs. 1-12. Cymbonectes huxleyi, n. sp. (p. 134). 



Diam. 



Fig. 1. The entire corni with expanded stem. From the hydroecial groove of the single nectophore 

 proceeds a long tubular stem, which bears eight or nine well-developed diclmic cormidia, 

 alternating males and females. The signification of the characters is the same as in 

 figs. 2-4, . . . . . . . . . . x 10 



Fig. 2. Dorsal view of the nectophore. cs, Somatocyst ; co, oleocyst ; ex, right canal ; el, left canal ; 



w, subumbrella ; nd, dorsal edge of the umbrella, . . . . x 10 



Fig. 3. Ventral view of the nectophore. a, Apical part of the trunk ; nx, right wing, nl, left wing 



of the ventral side of the exumbrella, protecting the hydroecial canal, . . x 10 



Fig. 4. Horizontal transverse section through the middle part of the nectophore. w, Subumbrella ; 

 uw, its cavity ; ed, dorsal canal ; ex, right canal ; nd, dorsal edge of the exumbrella ; 

 nx, right ventral wing ; nl, left ventral wing ; ui, hydroecial canal ; a, trunk of the 

 siphosome, . . . . . . . . . x 10 



Fig. 5. A single female cormidium. b, Bract ; be, phyllocyst ; co, oleocyst ; a, trunk ; s, siphon ; 

 sb, basigaster ; sm, stomach ; sr, proboscis ; s«, suctorial disc ; /, gynophore ; a; its radial 

 canals ; o, ovarium, . . . . . . . . x 50 



Fig. 6. A single male cormidium. b, Bract ; be, phyllocyst ; co, oleocyst ; a, trunk ; s, siphon ; 



t, tentacle ; /(, androphore ; hx, spadix ; lis, spermarium ; uo, ostium umbrellae, . x 50 



Figi 7. Longitudinal section through a single siphon, in a highly contracted state, with the neigh- 

 bouring parts, be, Phyllocyst ; co, oleocyst ; /, tentacle ; ts, tentilla ; sb, basigaster ; 

 sm, stomach ; sr, proboscis ; so, mouth, . . . . . . . x 200 



Fig. 8. A single tentillum. ts, Pedicle ; tk, cnidosac ; krj, large reniform lateral cnidocysts ; km, 

 small paliform median cnidocysts ; kp, small pyriform distal cnidocysts ; //, terminal 

 filament, .......... x 400 



Figs. 9-12. Four different larval stages (Calyeonuld) of Cymbonectes huxleyi, arising from the 

 fertilized egg. Each larva is a single medusome, the manubrium of which (or the primary 

 siphon, s) has been protruded through the ventral fissure of the umbrella (or the primary 

 nectophore, n). e, Exoderm ; d, entoderm ; t, tentacle ; w, subumbrella • v, velum, . x 300 



Figs. 13, 14. Monophyes princeps, n. sp. (p. 129). 



Fig. 1 3. Lateral view of the nectophore, from the left side, cs, Somatocyst ; co, oleocyst ; cd, dorsal 



canal ; el, left canal ; ex, right canal ; cv, ventral canal ; v, velum ; as, trunk, . . x 1 2 



Fig. 14. Horizontal transverse section through the middle part of the nectophore. Characters as in 



fig. 4, . . . x 12 



