Echinodermata, by Prof. F. J. Bell. 433 
species two specimens from 250 fathoms. Dr. H. Carpenter 
intends to investigate the limits of this species; it will, I 
think, be contrary to what usually happens when questions of 
this kind are closely studied if he should be led to any other 
conclusion than that we have here to do with what may justly 
be called a protean species. ‘The depth recorded is greater 
than any yet given by 150 fathoms. 
Antedon phalangium, J. Miiller. 
A single specimen from 250 fath. Dr. H. Carpenter gives 
30-220 fath. as the bathymetrical range of the species. Mr. 
Green’s dredging therefore slightly increases the range. 
B. ECHINOZOA. 
IJ], ASTEROIDEA. 
Pontaster tenuispinis, Diib. & Kor. 
Of this common species several specimens were sent from 
315 fath.; “ many” were also dredged at ?250 fath. The 
finest specimens are unfortunately a good deal injured; but a 
good series was got, as some of the specimens are quite young. 
Astropecten irregularis, Penn. 
A number of specimens from various depths, 250, 500, and 
1000 fath. The species is so variable that it would be unsafe 
to regard the arrangement of spines, proportion and number 
of marginal plates, and so on in these examples as in any way 
characteristic of deep-sea forms. I cannot, indeed, see any 
special points in them; but the depths are noteworthy, as 
Mr. Sladen has none greater than 374 fath. 
Luidia ciliaris, Phil. 
Two specimens, from 55 fath. 
Astrogonium Greent. (Pl. XiX. fig. 4.) 
R= 27, r=12°5. 
The curve between the arms is well rounded; there are 
seven or eight superomarginal and seven to nine inferomarginal 
plates ; those of the upper and lower series do not correspond 
regularly ; the innermost are longer than wide, one or two 
about the middle of the row tend to be square, and the more 
external are wider than long; the terminal superomarginal 
