CLARK: BERMUDAN ECIIINODERMS. 
343 
almost smooth with a row of small tubercles along each side, while 
others are extremely rough and warty ; and all conditions between 
the two extremes could be found, nor is any particular condition 
correlated with any particular color pattern. The more individuals 
of the Bermudan species I examined, the more I became convinced 
that specific differences in this genus based on the size, number or 
arrangement of pedicels, papillae, or tentacles, or on the color, are 
worthless. The most reliable characters are to be found in the cal¬ 
careous parts, while the general size and shape and the habits will 
assist in specific determination. Until some new evidence is in¬ 
troduced, I must regard diaboli and xanthomela as one species, 
and both names as synonyms of mobii Sernp. 
The collection which Mr. Carpenter sent me contains several 
specimens of a holothurian not previously reported from Bermuda. 
They were collected in Hungry Bay on the south shore, June 26, 
1899. The notes with them read : “Found under stones on sandy 
bottom in a foot or so of water. Specimens have a ground color of 
brown and drab in several shades, with more or less numerous 
blotches of steel-blue. Body usually tapering toward the two ends. 
Length 4 J—8 inches; greatest diameter ^ -1J inches.” The alco¬ 
holic specimens are very strongly tinged with dark yellow, and 
the steel-blue has become purplish. These specimens represent a 
species originally described from Brazil by Mr. Richard Rathbun, to 
which he gave no name but which Lampert, in 1885, called IIolo- 
thuria rathbuni. The species occurs in Puerto Rico and is com¬ 
mon in Jamaica, and my specimens from the latter island agree 
perfectly with these from Bermuda. 
The observations made during 1899 make some corrections 
necessary in statements made last year (Further notes on the 
echinoderms of Bermuda — Annals N. Y. acad. sci., vol. 12, no. 
7, July 7, 1899) regarding the abundance and distribution of 
certain forms. Moreover, there are two changes to be made in 
the list of holothurians ; so a corrected list of the echinoderms of 
Bermuda is appended, with a statement of their abundance and 
the localities where they have been collected. 
Asteroidea. 
1. Luidia clathrata (Say). Not uncommon. Hamilton Har¬ 
bor. Harrington Sound. 
