74 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 7 



smooth (pi. 19, figs. 236, 237, 241), the appendage shorter, falcate, 

 and the tip entire or bifid. Inferior neuropodial setae are much finer, 

 paler yellow, with much longer appendage and tip entire or nearly so 

 (pi. 19, figs. 232, 233). The neuropodial setae in the first few segments 

 include some with a serrulated shaft and long, bifid appendage (pi. 19, 

 fig. 242). Ventral cirri are long, tapering, extending distally about as 

 far as the neuroacicular lobe (pi. 19, fig. 239). 



Psammolyce spinosa approaches P. farquharensis Potts (1910, p. 

 347) from the Indian Ocean, in that the elytra are not incised, their 

 margins fimbriated and provided with lobes. It differs from the latter, 

 however, in that the superiormost neuropodial setae have a distinctly 

 spinose shaft, and the median composite setae are somewhat spinose. In 

 so far as I am aware, no species of the genus Psammolyce Kinberg has 

 been described from the eastern Pacific. It is therefore of great interest 

 that these collections should include 4 species, all of which appear to be 

 new to science (see below). 



Holotype. — ^AHF no. 14. 



Distribution. — Chatham Bay, Cocos Island (Holotype); Clarion 

 Isle, Mexico. In coral; in white sand, 40 to 46 fms. 



Psammolyce fimbriata, new species 

 Plate 20, Figs. 244-254 



Collections.— 250-34, 283-34, 745-37 (Holotype). 3 specimens. 



Length of 88 anterior setigerous segments is 43 mm. The dorsum 

 is broadly exposed between the inner margins of the elytra, but heavily 

 covered with sand particles, as also most of the surface of the elytra. 

 The ventrum is pilose, overlain with many short hairs, the region im- 

 mediately posterior to the mouth, on the ventral side, with numerous 

 long hairs, forming a V-shaped area that extends posteriorly at least to 

 the fourteenth segment. From the twentieth or twenty-fifth segment 

 there are longer, filiform papillae, in more or less regular, transverse 

 series inserted in the intersegmental furrows; these become increasingly 

 numerous more posteriorly, appearing fur-like. 



The prostomium is ovoid, narrowest anteriorly, largely concealed by 

 the median ceratophore and peristomial structures. Eyes 4 pairs, a 

 larger ventral pair at the frontal margin and a smaller, elongate, pos- 



