376 
THE VOYAGE OE H.M.S. CHALLENGEE. 
Amaroucium pallidulum. 
„ albidum. 
„ nigrum. 
Psammaplidium spongiforme. 
„ ovatum. 
}) pyriforme. 
Didemnum aurantiacum. 
„ inerme. 
Leptoclinum tonga. 
„ moseleyi. 
,, speciosum. 
„ ,, var. asperum. 
„ annectens. 
„ albidum. 
„ ,, var. luteolum. 
,, subjlavum. 
„ jeffreysi. 
,, jacksoni. 
„ rubicundum. 
Diplosomoides molle. 
Diplosoma macdonaldi. 
Goodsiria placenta. 
,, „ YQ.T.fusca. 
„ pedunculata. 
,, coccinea. 
Synstyela incrustans. 
Chorizocormus reticidatus. 
Jii this list twenty- two genera and six families are represented. 
II. — Between 50 fathoms and 100 fathoms thirty-one species were found, viz. 
Colella pedunculata. 
„ concreta. 
Tylobranchion speciosum. 
Atopogaster gigantea. 
„ aurantiaca> 
„ elongata. 
Morchellioides ajffinis. 
Morchellium giardi. 
Sidnyum pallidum. 
