332 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
ous, dark olive green, and quite stout. The occurrence of this 
species in Puget Sound extends its range eastward many hundred 
miles, as the Sandwich Islands have hitherto been supposed to mark 
its eastern limit. 
? Toxopneustes semituberculatus (Val.). 
There are two denuded tests of a Toxopneustes , apparently refer¬ 
able to this species, but resembling T. variegatus in some particulars. 
The actinostome is small (14-15 mm. across), and there seems to be 
no granulation of the bare ambulacral and interambulacral spaces. 
The specimens are 40 and 45 mm. in diameter, and the coronal 
plates are 23 and 25 in number, respectively. The occurrence of 
this species in Puget Sound extends its known range considerably 
to the northward. 
Clypeaster rotundus A. Ag. 
There are two specimens of a Clypeaster , very similar to speci¬ 
mens of subdepressus from the West Indies, but undoubtedly 
referable to rotundus , thus extending the known range of this 
species considerably to the northward. The specimens measure 
120 x 100 and 97 x 86 mm. 
Echinarachnius excentricus (Esch.). 
There is a single denuded test of this species, 84 x 81 mm. Mr. 
Harrington speaks of this as the most abundant and characteristic 
echinoid of the sand flats near Port Townsend. He says that the 
sand was thickly packed with them, and that “ fully 80 per cent 
had the pointed side directed vertically or obliquely downward.” 
He also speaks of collecting this species in Hood’s Channel and at 
Neah Bay. 
IIOLOTHURIOTDEA. 
I 
Although there are only four species of holothurians in the col¬ 
lection, two of them are new to science and the other two are very 
incompletely known, and have hitherto been recorded from only a 
single locality. The material is not in the best of condition, except- 
