A. E. Verrili— Marine Fauna off the New England Coast. 137 
a very remarkable and hitherto rare hermit-crab (Parapagu- 
rus pilosimanus Smith), with its associated, investing polyp 
(Hpizoanthus paguriphilus V.)* which is a true commensal, form- 
ing, out of its own tissues, the habitation of the crab; and 
hitherto it has not been found elsewhere than upon the back of 
this particular species of crab, which, likewise, has not been 
found without its polyp. Of these associated creatures we 
i 2 
Species were obtained, among which were several fine large 
large species of Fissurella, and a very large specimen of a rare 
crab, Geryon quinquedens Smith, also occurred. 
uring the summer, the writer made some observations in 
regard to the phosphorescence of many species. Among those 
having strong phosphorescence, were Pennatula aculeata ; Aca- 
nella Normani; Urteina nodosa (in which it is confined to the 
tentacles and the-smoother, soft portion of the column, near the 
summit) ; Ophioenrda olivacea; Ophiacantha bidentata. 
Additional dredging stutions occupied by the Fish Hawk, in i881. 
| Temperature. 
Fath. Bottom. Date. 
| 
| | 
Bottom. | Surface. 
Station. Locality. 
Pee ee | 
Of Martha’s Vineyard. 
| 
: 1881 
1038 | 39° 58” 70° 06’ | 146 sand & shells} Sept. 21 47°F 67°F. 
“ oe 5 
1039 | 39 59 70 06° | 136 0 67 
Of Delaware Bay. 
N. Lat, W. Long. 
1043 | 38° 397 "3° 11” | 130 sand Oct.10 | 49 654 
1044 | 38 37 va he 224 | gray mud " 424 66 
7S] 38° 35. 4S Nae | B13 is i 0 66 
1046 | 38 33 73 18 104 | | sand : 51 66 
1047 | 38 31 73 21 | 156 Me tH 49 66 
1048 | 38 29 13 21 | 4365 mud at 40 66 
_1049 | 38 98 73 22 | 436 ie « 40 66 
ey 
mud-colored, translucent basal ec chyma, which at first invests small univalve 
Shells, occupied by Para imanus, but finally grows far la than th 
Shell and eventually absorbs it. Disk broad, larger than column; tentacles nume- 
light orange. Breadth of colony, 2 to 3 inches; height of 
. Ll inch or more; diameter, °5 to ‘7 of an inch. 
g, 
nD 
polyps, in expansion 
