190 PSAMMOLYCE FLAVA. 



In the anterior segments the ventral side of the body 

 as well as the middle of the dorsum are smooth, without 

 papillae and accordingly the coating with grains of sand 

 also is nearly absent. Also the elytra are not so densely 

 covered as usually and their boundaries are more conspi- 

 cuous, therefore the worm has a less compact appearance 

 and a looser structure, like most of the deep-sea worms. 

 In the remaining part of the body the venter is densely 

 covered with papillae, all of the same length, giving it a 

 verrucous appearance. In the anterior segments the elytra 

 have the anterior border concave and smooth, whereas the 

 remaining margin is beset with rather long filiform pa- 

 pillae, that also are found on their upper surface. In the 

 segments that are situated more posteriorly, the anterior 

 border of the elytra is straighter, whereas their median 

 part is lobe-like elongated and a great number of papillae 

 are found on the external part of their surface. 



Ps. Kinhevfji Hans., also found in the neighbourhood of 

 Rio Janeiro, that I myself had the opportunity to examine, 

 is quite an other species, allied to Ps. arenosa as to the 

 appearance of the bristles, of the dorsal cirrus of the third 

 segment etc. ; unfortunately the figures given by Hansen 

 are not very accurate. 



Psammolyce malatjana^ n. sp. 



Siboga-expedition, Stat. 81, Pulu Sebangkatan, Borneo- 

 bank; Stat. 133, anchorage off Lirung, Salibabu-island ; 

 Stat. 153, N. W. off Waigeu-island ; Stat. 204, Buton- 

 strait; Stat. 313, Saleh-bay, Sumbawa. 



This worm belongs to those Psamuiohjce-STpecies (like 

 Ps. fijiensis and Ps. occidentcdis), that have the anterior 

 extremity of the body snout-like elongated, on account of 

 the extraordinary length of the first pair of elytra. The 

 species appears to be very brittle, for only the anterior 

 portion of the body of the various specimens is preserved ; 

 perhaps the posterior body-region is buried into the bottom 

 of the sea. The entire dorsum is covered with coarse grains 



Notes from the Leyden IMuseuin, "Vol. XXX"V. 



