658 REPORT OF COMMISSIONER OF FISH AND FISHERIES. [18] 



One of the nost striking instances was the occurrence of a very 

 remarkable and hitherto rare hermit crab {Parapagurus pilosimanun 

 Smith), with its associated, investing polyp {Epizoantlius paguriphilus 

 v.), which is a true commensal, forming, 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 rarely been found without its polyp. Of these associated creatures 

 we took about 400 couples, at station 947, in 312 fathoms, at one haul. 

 It had previously only been known by a few specimens taken by the 

 Gloucester halibut fishermen, in deep water, off Nova Scotia, and by 

 ourselves, in 1880. 



LIST OF DEEP-WATER ECRINODEEMATA TAKEN BY THE FISH HAWK, 



1880-1882.* 



HOLOTHURIOIDEA. 



LoPHOTHURiA Fabricii Vexrill. 234 fathoms. 



Station 1121, 1 young. Northern, in shallow water. 

 Thyone scabra Verrill. 51-040 fathoms. 



S. 870, 871, 876, 877, 894, 898: 919, 939, 943, 949, 1038, 1040, 1049: 

 1092, 1124, 1142. 

 ToxoDORA FERRUGINEA Verrill. 100-155 fathoms. 



S. 870, 871, 873, 876, 877: 943, 949. 

 MoLPADiA TURGIDA Verrill. 120-787 fathoms. 



S. 876(1): 1026 (2): 1123. 



ECHINOIDEA. 

 ScHizASTER FRAGiLis (Duben & Koren) L. Agassiz. 56-321 fathoms. 



S. 865, 869, 870, 871, 873, 874, 876, ab., 877, ab., 896: 939-941, 943, 

 '945, 950, 1025, ab., 1026, 1032, ab., 1035, 1036, 1038, ab., 1043, 1045, 

 1047: 1080, 1091, 1092, 1094-1098,1110, 1113, 1114, 1119, 1121, 1125, 

 1138, 1145, 1153, 1154. 

 SCHizASTER CANALIFERUS L. Agassiz (variety*?). 65-134 fathoms. 



S. 871, 873, 874, 876, 877: 921-922 (9), 940, 941, 949: 1108, 1110, 1151, 

 1152. 

 Brissopsis lyrifera (Forbes) L. Agassiz. 65-194 fathoms. 



S. 870: 921, 1038: 1097, 1120. Europe and W. Indies. 

 Spatangus purpureus Leske. 89-158 fathoms. 



S. 940 (1 large, living) : 1097, 1098, 1109, 1119. Europe and W. Indies. 

 ECHINOCYAMUS PUSILLUS (Muller) Gray. 146 fathoms. 



S. 1038 (1). Europe and W. Indies. 

 EcHiNARAOHNius PARMA Gray. 10-219 fathoms. 



S. 951, 985-989, very ab., 1038, many: 1097, 1109, 1117, 1119, 1120. 

 Phormosoma Sigsbei a. Agassiz. 458-787 fathoms. 



S. 1029 (1 living): 1123. W. Indies (A. Ag.). 

 Echinus gracilis A. Agassiz. 86-202 fathoms. 



S. 872 (2): 940 (7), 1038, 1039, 1046 off Delaware Bay, 3 large: 1092, 

 1097, 1098, ab., 1109, 1119. 



* The colons in this list seijarate the numbers of stations belonging to diflferent years. 



