NARRATIVE OF THE CRUISE. 
855 
collection, the representatives of some of the other genera are not devoid of importance 
either. 
The study of the material from a morphological point of view has also yielded some 
results, and these have been brought together in a supplementary Report. A detailed 
description ot the little male of Scalpellum regium, and a comparison of its structure 
with that of the other species ol Scalpellum , form the first chapter of this supplement. 
Some of the more general results of the investigations in this department have been given 
already. The second chapter is devoted to the description of those problematic organs 
Fig. 320 . — Scalpellum darwvnii, Hoek, attached to 
a manganese nodule. Station 299, 2160 fathoms. 
Natural size. 
Fig. 321.— Scalpellum regium (Wyv. Thoms.), 
Hoek. a, the male. Stations 61 and 63, 
2850 and 2750 fathoms. Natural size. 
of Cirripedia which Darwin observed in the outer maxillae, and to which he ascribed an olfac- 
tory function. They were found to constitute an open communication of the body-cavity 
with the exterior, and shown to be comparable with the segmental organs of the Annelida. 
“ A rather detailed description of the cement-apparatus is given in the third chapter. 
The structural differences in the various genera do not lack importance ; however, their 
importance would no doubt be much greater still, if the question of the morphological 
significance of the apjiaratus were more decided. 
(narr. chall. exp.— vol. i. — 1885 .) 
108 
