838 The Siphonophores. [August, 
covered by the gelatinous plate. The swimming-bell of Mono- 
phyes resembles the posterior bell of Abyla in its possession of 
Fig. 3. Fig. 4- 
, FIG. 2.—Diphyizodid of Abyla (?) (Aglaisma), Fic. 3.—The same from a ae 
side. Fic. 4.—Polypite of Aglaisma. 6, budding sexual bells; <s, regen” part — 
łe, longitudinal canal on the under side of the covering scale; 0g, "e , ph, ten- 
of the somatocyst; 9, polypite; s, somatocyst; sm, tube in covering ARAS 
tacular knobs; v, villi on inner side of polypite. 
this cavity. There is also in the walls of the bell of eee 
phyes a blindly ending tube communicating with the 7 de 
of the axis which corresponds with the somatocyst Of © 
