REPOET ON THE HOLOTHURIOIDEA. 
47 
Station 320, February 14, 1876; lat. 37° 17' S., long. 53° 52' W.; depth, 600 
fathoms; bottom temperature, 3 7 '2; green sand; an incomplete specimen. 
Caudina coriacea, Hutton, 1872 and 1879. 
Habitat . — Station 167a, June 27, 1874; lat. 41° 4' S., long. 174° 19' E. ; Queen 
Charlotte Sound, near Long Island ; depth, 1 0 fathoms ; mud ; caudal portions of 
several individuals. 
Only larger or smaller parts of the caudal portions of the body having been left, no 
complete diagnosis is possible, and for the same reason I cannot be quite sure of the 
genus to which it belongs. The integument is very firm, coriaceous, and hard, from 
numerous closely crowded deposits. Anus is surrounded by five groups of elongate 
papiUm, each group with five to seven papillae. The supporting calcareous substance of 
one of these papillae of each group seems often to be more developed and transformed 
into a kind of tooth built up of a dense and firm network. 
The deposits of the body -wall strikingly resemble those in Caudina ransonnetii, v. 
Marenzeller (PI. III. fig. 4) ; their diameter is as much as 0 '05 2 mm. The deposits of the 
anal papillae differ in a striking manner from those pertaining to the rest of the body. There 
seems to be but little doubt that these fragments belong to the species of Hutton dredged 
at the same locality. Having had the opportunity to examine the deposits of his types, 
I can confirm that they closely resemble those found in the Challenger specimen and those 
described by v. IMarenzeller. I should not hesitate to refer Hutton’s and the Challenger 
specimens to Caudina ranzonnetii, but v. Marenzeller does not mention the presence of 
the anal papillae with their characteristic deposits (PI. III. fig. 4c.). 
