Fig. 
38. 
BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
PLATE 7. 
Tiaropsis rosea, nov. sp. 
5 «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; ot., otolith enclosed within an open pocket of the 
velum. 
PLATE 8. 
Mitrocoma mbengha, nov. sp. 
if E Edge of bell. 
Polycanna purpurostoma, nov. sp. 
n # Oral view of a portion of the bell. M., mouth. 
de 2 Edge of bell showing otocysts and tentacles. 
Eirene kambara, nov. sp. 
PLATE 9. 
Eutimeta levuka, nov. sp. 
% x Edge of bell. 
Liriope hyalina, nov. sp. 
PLATE 10. 
Linerges aquila, Haeckel. 
de er Marginal sense organ. 
Aurelia vitiana, nov. sp. 
PLATE 11. 
Cephea dumokuroa, nov. sp. Side view. 
e i Aboral view of the disk. 
PLATE 12. 
Cephea dumokuroa. Section to show the internal structure: gpt., sub- 
genital pit; m. $. 0., marginal sense organ; ov., genital organ; r, 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. 
$ da Marginal sense organ of adult Medusa. 
a 4 Side view of a young Ephyra. 
oH pá Oral view of a young Ephyra. 
Marginal sense organ of young Ephyra. 
