20 Proceedings of the Royal Physical Society. 



There is a large internal cavity, and the internal surface 

 is continuously covered with triangular processes (1'6 to 1'8 

 mm. in length) projecting into the lumen (Fig. IL, T.P.). The 

 outer surface is densely covered with elongated, capitate, 

 "tentacular bodies" (2 to 3 mm. in length, with a diameter of 

 •3 to '35 mm. in the stalk, and "4 to '5 mm. in the head) 

 (Fig. II., Cn.). The first half-inch of the body shows two 

 somewhat bare annular zones, which are perhaps in part 

 artificial. Among the capitate " tentacular bodies " in the 

 distal half of the specimen, there are numerous spherical or 

 flask-shaped structures (Fig. II., Gn.) from 1 to 2 mm. in 

 height. Some of the spherical structures bear tentacular 

 bodies, sometimes 1 mm. in length (Fig. III.). The natural 

 colour — a strong orange-red — has disappeared entirely, and 

 left a yellowish white. 



I do not know how a specimen of this kind — which does 

 not seem to be a viable animal — can be interpreted except 

 as the separated gonostyle or sexual palpon of a large 

 Siphonophore colony. But it is remarkable that no other 

 trace of any Siphonophore was seen in these regions, and 

 a colony whose gonostyles measure 4 (A,), 6 (B.), and 8J (C.) 

 inches in length must be a very conspicuous object. In 

 A. and B. the terminal opening at the narrow end is very 

 definite, and not in any way torn or jagged ; it probably 

 represents the communication between the gonostyle and 

 some central cavity of the colony, e.g., the central siphon. 

 What I have called " tentacular bodies " are probably stalked 

 cnidospheres. As to the nature of the spherical or flask- 

 shaped structures, there can be no doubt that they are 

 gonophores. There is distinct evidence of a medusoid bud 

 of complex structure, and with reproductive elements. In 

 one case a very distinct ovum was seen. It may be suggested 

 that the triangular internal processes are absorptive in 

 function. 



Specimen B. measures 6 inches in length by 0*8 inch in 

 diameter at one end and 0*2 inch at the other. Its shape 

 resembles an elongated club, and the proximal end (cor- 

 responding to the handle of the club) is almost bare of 

 stalked cnidospheres. In other respects it agrees with A. 



