188 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
21. 
22. 
25. 
59. 
40. 
41. 
42. 
43. 
44. 
BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
PEAT a7. 
Tiaropsis rosea, nov. sp. - 
af «« Marginal sense organ. 
Section through the marginal sense organ of Tiaropsis diademata, 
L. Agassiz: ent., entoderm; ect., ectoderm; ct., circular vessel, cut 
across; vel., velum; pg., pigment spot in the entoderm of the cir 
cular vessel; of., otolith. enclosed within an open pocket of the 
velum. 
PLATE 8. 
Mitrocoma mbengha, nov. sp. 
2 < Edge of bell. 
Polycanna purpurostoma, nov. sp. 
. = Oral view of a portion of the bell. J/., mouth. 
Edge of bell showing otocysts and tentacles. 
“ce “ 
Eirene kambara, nov. sp. 
PLATE 9. 
Eutimeta levuka, nov. sp. 
+ Edge of bell. 
Liriope hyalina, nov. sp. 
PLATE 10. 
Linerges aquila, Haeckel. 
Ky s¢ Marginal sense organ. 
Aurelia vitiana, nov. sp. 
PLATE OL: 
Cephea dumokuroa, nov. sp. Side view. 
& - Aboral view of the disk. 
PLATE 12. 
Cephea dumokuroa. Section to show the internal structure: gpt., sub- 
genital pit; m. s. 0., marginal sense organ; ov., genital organ; 7, one 
of the 8 thick gelatinous pillars that support the membranes of the 
genital organs; these radial pillars correspond in position with the 
8 mouth arms; S, stomach cavity; s. por., sub-genital porticus; rt., 
radial chymiferous vessel; t, chymiferous tube in the mouth arm. 
Cephea dumokuroa: Marginal sense organ. 
PLATE 13. 
Pseudorhiza Thocambaui, nov. sp. Adult Medusa. 
es Marginal sense organ of adult Medusa. 
“ 3 Side view of a young Ephyra. 
= " Oral view of a young Ephyra. 
ce ig Marginal sense organ of young Ephyra. 
