terial in the stomachs made identification of 
the fragments quite difficult, as compared with 
fragments obtained from herbivorous species 
such as Hemigrapsus. Within the various stom- 
achs were found fragments of brown algae ( sp. 
?) and some form of green plant which re- 
sembled Zoster a. Diatoms similar to those found 
in the stomachs of Hemigrapsus were also pres- 
ent in a few of the specimens. A peculiar whitish 
material, more or less well broken up, and re- 
sembling coralline algae was also found. As 
recorded by Knudsen (1959:114) this genus 
feeds to a large extent on coralline algae of the 
species Corallina gracilis, C. vancouverensis, Bos- 
sia orbigniana, and B. gardneri. Encrusting and 
free-living coralline algae are found in limited 
quantities in the Puget Sound habitat of Lopho- 
panopeus and thus may be used as a food source 
by this species. Some animal tissue (crustacean, 
mussel, and barnacle fragments, and nematode 
worms) was also found. The nematode worms 
are believed to be stomach parasites, however, 
and not a food source. 
SYNOPSIS OF REPRODUCTIVE ACTIVITY: Fig- 
ure 6 shows tbat oogenesis begins in the autumn 
and continues until the time of egg deposition. 
The ova reach a near maximum size in Decem- 
ber and then increase in size very slowly until 
the time of deposition. Fertilization and depo- 
sition begin in the early weeks of January and 
continue very rapidly throughout the month of 
February. Early in March a leveling-out is 
reached, with a high of 92.3% of the females 
bearing eggs. Our observations and those of 
Hart (1935:414) show that hatching begins in 
May but the appearance of brood number two 
tends to offset hatching as far as the percentage 
of females bearing eggs is concerned. Thus, 
Figure 6 shows a slow increase until the first 
week of June, at which time the hatching of 
brood number one sharply increases and offsets 
the rising curve of brood number two. About 
60-70% of the females produce a second brood 
which matures rapidly and hatches, probably, 
throughout the month of September. A solid 
line on Figure 6 indicates that accurate field 
measurements have been made to substantiate 
the curve, but a broken line indicates that field 
data are few, or lacking. A brief period of 
quiescence follows the second brood and then 
oogenesis begins again in the fall. 
Fig. 6. The reproductive cycle of Lophopanopeus 
bellus bellus. 
