20 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 125 
teenth setiger, rather than to the twenty-fourth to thirtieth or a little 
beyond as in California material 8.5-13 cm long (Hartman, 1944). 
Found at stations 1, 3-6, and 8. New for Puget Sound. Previously 
known from California. 
Intestinal Contents of Local Lumbrineris species 
From inspection of entire animals, we note that the intestines of 
specimens of the local species of one to a few cm length are filled only 
to about one-fourth of their length, sometimes less. The sediment 
occurs in boluses at least in the middle and posterior sections of the 
body. Dissection of two specimens each of four species showed the 
following (width is without parapodia; all animals had been collected 
in the daytime): 
LUMBRINERIS BICIRRATA TREADWELL.—The intestinal contents of 
a posterior fragment from station 4 of 3 mm width contained sand 
grains up to 0.2 mm wide, inbedded in a fair amount of organic and 
inorganic fine material. The intestinal contents of an almost 10-cm- 
long specimen of 6 mm greatest width from station 2 were a large 
amount of fine sediment with some diatom frustules and sand of up 
to 0.15 mm diameter. In neither case could recognizable organic 
remains be seen. 
LUMBRINERIS CALIFORNIENSIS HartMAN.—The hind intestine of 
a small individual (about 1 mm wide) from station 7 contained very 
fine sediment of less than 0.01 mm grain size and two healthy locking 
nematodes. A specimen about 1.5 cm long and 1 mm wide from station 
1 contained fine detrital material, with a few sand grains up to 0.15 
mm in diameter, and several pieces of a terrestrial plant epidermis 
about the same size. 
LUMBRINERIS CRUZENSIS HARTMAN.—A young specimen about 1 em 
long in length and <1 mm wide from station 1 contained fine detrital 
material, with a few sand grains <0.07 mm in diameter. Many other 
specimens of approximately the same size from this station and 
station 7 had empty intestines. 
LUMBRINERIS LUTI BERKELEY AND BERKELEY? (for identification, 
see Banse et al., in press).—T wo posterior fragments 1.5 cm long and 
about 1 mm wide from station 4 contained largely coarse material, 
including unbroken Coscinodiscus species frustules 0.2 mm in diameter. 
Most specimens had sediment about the same grain size or particles 
smaller than the mean grain size of their habitat in their intestines, 
suggesting predominantly selective feeding. Because of the partial 
filling of the guts, it may be doubtful whether the species are ex- 
clusively selective deposit feeders as these have to cope with large 
amounts of sediment to obtain enough organic material. The absence 
