Laguna @arine Laboratory 93 
and folding down to rows of fine hairs. Auxiliary claws very small. 
Genital openings not apparent. Color straw. Measurements in mm. 
Proboscis 1.424; body (from anterior edge to insertion of abdomen) 
1.5; leg (approximately) 8; diameter of lateral (leg-bearing) pro- 
cesses .428, 
This specimen was swept from fucus at low tide and was put in 
a bottle with a small nudibranch mollusk which we caught about the 
same time. About half an hour later we discovered this pyenogonid 
greedily feeding on the nudibranch. This is of special interest as 
very little is known of the feeding habits of these interesting crea- 
tures. 
This species bears a superficial resemblance to Pallenopsis, how- 
ever it differs from that genus in the following respects, 1. e.: The 
abdomen is neither long nor slender, there are no eyes apparent, 
and the ovigerous legs, instead of being ten-jointed and present in 
both sexes, are in my specimen reduced to the merest rudiments and 
are within the body wall so that externally they do not show. On 
the other hand it is not a typieal Anoplodactylus, the body being 
more compact than is usual in that genus, though not nearly so 
compact as that of A. anarthrus (oman). 
Ammothella bi-unguiculata var. californica n. var. 
(Figure 50) 
Body distinctly segmented, leg-bearing processes moderately 
separated and moderately developed. Their length is about one-half 
their diameter. Intersegmental lines all distinct. Proboscis slim, 
spindle shaped; in length two and one-half times the diameter, and 
four-thirds the length of the body; ending in front with a rounded 
obtuse angle as seen from above. Four eyes in pairs on a very low 
eye tubercle; well pigmented. Abdomen small, cylindrical, less than 
one-fourth the length of the body, with bluntly rounded tip. Anus 
in notch at the tip. Chelifores short, one-sixth the length of the 
proboscis, three-jointed; chele undeveloped; first joint very short, 
shaft not quite as long as terminal joint which is nearly spherical. 
Diameter of chelifores slightly less than that of the palpi. Palpi 
nine-jointed; as long as the proboscis. First joint short and thicker 
than the others. Second joint four times as long as the third; fourth 
joint almost as long as the second; fifth and sixth joints about the 
same length as the third. Terminal joints decrease in order. Very 
few hairs on the palpus except on the terminal joint. Ovigerous legs 
slightly longer and with slightly greater diameter than the palpi. 
The ten joints named in the order of their lengths (except the first 
which is short and much thicker than the rest) are, 4, 2, 5, 6, 3, 7, 
8,9, 10. The terminal joints are spirally rolled and on the tip of the 
