PLATE XVIII. 



Figs. 1-7. Dicymba dvphyopsis (p. 210). 



Fig. 1. The entire corm, drawn from life, with expanded trunk, and twelve fully developed ordinate 

 cormidia. p, Pneumatophore ; n, nectophores ; w, subumbrella ; v, velum ; a, axial trunk. 



Fig. 2. A single cormidium. s, Siphon ; sh, its four hepatic ridges ; sr, proboscis ; ,?b, basigaster ; /, tentacle ; 

 y, cyston ; q, palpons ; r, palpacles ; h, bracts ; h, androphores ; /, gynophores ; a, trunk of the corm. 



Fig. 3. A female gonodendron. 



Fig. 4. A single female gonophore. fu, Umbrella ; o, ovarium with a single egg, surrounded by a network 

 of spadicine canals (cy) ; uy, ocelli of the margin ; cr, radial canals. 



Fig. 5. A male gonodendron. 



Fig. 6. A single male gonophore. hu, Umbrella ; lira, spermarium ; cr, radial canals. 



Fig. 7. Transverse section through the trunk. at, Axial canal of the trunk ; d, entoderm ; m, longi- 

 tudinal muscles ; e, exoderm ; /', bud in the ventral median line ; ad, nerve in the dorsal median 

 line. 



Figs. 8-17. Agalma eschscholtzii, n. sp. (p. 226). 



Fig. 8. The entire corm, drawn from life. The nectosome is composed of an apical pneumatophore (^;) and 

 four pairs of nectophores (n). The subspherical siphosome is densely covered with bracts (b) ; from 

 its axial cavity issue below a number of siphons (s) and tentacles, palpons (q) and palpacles (?•)• 



Fig. 9. A single nectophore, from the dorsal side, ir, Subumbrella ; uy, ocelli. 



Fig. 10. A trilobate bract, from the dorsal side, be, Bracteal canal. 



Fig. 11. A cpuinquelobate bract, from the dorsal side. 



Fig. 12. A trilobate bract, in profile. 



Fig. 13. A quinquelobate bract, in profile. 



Fig. 14. A single tentillum. tp, Pedicle; M, involucre; tk, cnidoband ; fa, terminal ampulla; te, paired 

 lateral horns. 



Fig. 15. A female gonodendron. fu, Umbrella of the gynophores; o, egg; a, trunk. 



Fig. 16. A single gynophore. fu, Umbrella ; cr, its four radial canals ; ce, circular canal ; cy, spadicine canals of 

 the manubrium (around the egg) ; o, ovule. 



Fig. 17. A male gonodendron. o, Trunk ; hu, umbrella of the androphores ; hm, spermarium. 



