20 
Psyche 
[March 
Head with a double V-shaped pale mark running from 
the posterior corner of each eye to the mid-posterior head 
region. Irregular pale areas occur on the dorsum of 
the fourth segment, and all intersegmental membranes 
are pale. Antennae. Apex of fourth segment with four 
or five flat knobs. Largest setae of antennae clubbed and 
ciliate, similar to but shorter than clubbed setae of body. 
Second antennal segment with distinct subsegment or 
partial suture. Head. Labial appendage with external 
differentiated seta contracted only at apex. Apex not 
reaching apex of same papilla, and slightly wider than 
normal setae. Clothing. Large flexed clavate setae un- 
usually long (longest longer than antennae), with ex- 
panded tip produced into a slender filament. 
Discussion: Only a few specimens were seen. The 
most striking variation concerns the color which varies 
from gray-blue to pale brown. The subsegment of the 
second antennal segment may be incomplete but at least 
part of the dividing suture is clearly visible in each case. 
The knobs at the apex of the fourth antennal segment may 
be very small or indistinct. Bacon illustrates an external 
tooth on the empodial appendage but this was not visible 
on any specimen in the series here examined. 
Distribution : California: Palos Verdes (under sub- 
merged rocks) Laguna Beach (lower tidal zone, under 
rocks) . 
Acknowledgements 
I wish to express my gratitude for the loan of material 
from the Dominion Museum of Wellington, New Zealand, 
and the private collections of Dr. Denis and Dr. Delamare 
Deboutteville of France. It was only the availability of 
this material which made this study possible. 
