236 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 15 



When disturbed or removed from the substratum, individuals 

 typically roll into a ball or tight coil so that the smooth ventrum of the 

 body is outside and the branchial or dorsal side is within; the cephalic 

 structures are innermost in the coil and the anal appendages outermost. 

 Swimming is accomplished with an abrupt opening and closing of the 

 coil. 



The method of feeding has been likened to that of some holothurian 

 echinoderms in which the multilobed proboscis of Orbinia is compared 

 with the branched crown of Cucumaria (holothurian). The proboscis is 

 extruded, loaded with nutrient particles and retracted, carrying food and 

 other particles into the digestive tract (Eisig, 1914, p. 168). 



Station Numbers of the Velero III and Velero IV with species 



of Orbiniidae, Paraonidae and Longosomidae from each station 



(see Fraser, 1943, for data on stations 885-38 to 1501-52). 



885-38. Scolophs armiger (1). 



886-38. Haploscoloplos clongatus (1). 



887-38. Scolophs acmeceps (1). 



888-38. Phylo felix ( 1 ) , Scoloplos armiger ( 1 ) . 



901-38. Naineris dendritica (1). 



905-38. Haploscoloplos clongatus ( 1 ) . 



908-38. Naineris uncinata ( 1 ) . 



992-39. Haploscoloplos clongatus ( 1 ) . 



1021-39. Scoloplos armiger (1). 



1149-40. Aricidea nr. suecica (2). 



1201-40. Haploscoloplos clongatus (1). 



1204-40. Naineris dendritica (1). 



1211-40. Scoloplos acmeceps (6). 



1222-41. Naineris dendritica (12). 



1228-41. Naineris dendritica (1). 



1256-41. Phylo felix (1). 



1259-41. Phylo felix (1). 



1299-41. Aricidea nr. suecica (1). 



1315-41. Naineris dendritica (1). 



1321-41. Aricidea nr. suecica (1). 



1327-41. Scoloplos armiger (1). 



1330-41. Naineris uncinata (1). 



1370-41. Naineris dendritica (1). 



1398-41. Naineris uncinata (many juveniles). 



