GALATHEALINUM BRUUNI 



405 



Kirkegaard described this genus and 

 species on the basis of only two incom- 

 plete specimens and nine fragments of 

 tube. The material was collected by the 

 Danish Galathea Expedition in the 

 southwest part of the Celebes Sea at a 

 depth of 5090-5110 m. The following 

 description of G. bruuni is based mainly 

 on that given by Kirkegaard but I 

 have made slight additions regarding 

 the plaques of the postannular region 

 of the trunk from a small fragment of 

 this part of the body found in a tube 

 kindly given me by Dr. Kirkegaard. 



The tentacular crown is formed of 

 numerous long tentacles (Fig. 161 A,B). 

 Kirkegaard gives the number as 105, 

 but he indicated that in all likelihood 

 some had been lost. The tentacles are 

 attached horse-shoe-wise. On the fore- 

 part of the body a deep groove in front 

 of the bridle separates off the cephalic 

 lobe, while a little farther back on the 

 ventral side in front of the bridle are 

 two wing-like folds or lappets, which 

 extend laterally, where their edges run 

 parallel to the bridle (Fig. 1615), to 

 meet dorsally. The adhesive plaques of 

 the fore-part of the trunk are oval, 

 with a crescentic thickening along the 

 front edge, and reach 40/x across. The 

 metameric paired papillae are appa- 

 rently numerous and densely packed 



Fig. 161. Galathealinum bruuni: A - front end of the body in dorsal, and, В - in ventral view; 

 С - part of the metameric section of the preannular region from the ventral side; D - tube; E - 

 part of the tube. 



с - cephalic lobe;/- bridle; /- ventral lappets of the mesosoma; pa - papillae; s 2 - groove between 

 the mesosoma and the metasoma; s 3 - pretentacular groove; sv - ventral sulcus; tc - tentacular 

 crown. (After Kirkegaard, 1956л.) 



