THE FOSSIL STALK-EYED CRUSTACEA 83 



much hioher and depressions deeper and the postero-lateral facet of 

 different form. 



Description of the mmnis. — The oblique upper edge of the palm 

 (pi. 19, fig. 7) shows five spines followed at the proximal end by 

 a round lobe which appears to be at the articulation with the carpus, 

 as the lobe is set off by the customary furrow ; the superior spines I 

 will designate in order of their position, the first being the most distal 

 shown, although it may not really be the end spine; the first spine 

 is shorter and narrower than the second ; the second to fifth, inclusive, 

 get progressively shorter, the fourth appears obliquely truncate, the 

 fifth lobiform. On the outer surface considerably below the spines 

 there is a row of three large, prominent tubercles, one behind the 

 first spine, one behind the third, and one behind the articulating 

 condyle ; these tubercles are not in a straight line, the distal one being 

 more distant from the base of the spines than are the other two. 

 There is also an indication of a tubercle on the base of the first spine. 

 The surface is sprinkled with very unequal granules, those on the 

 tubercles large and more numerous, while on the spines they are in 

 part of large size. Below and slightly distad to the middle tubercle 

 is another tubercle the top of which is broken off. At the proximal 

 end, above the lower margin there is a broken edge of a large spine 

 or tubercle, oval in cross-section. A portion of the lower edge of 

 the hand remains and shows vestiges of eight triangular spines 

 (there Avere probably several others) ; they are directed at right 

 angles to the margin, are of larger size than is customary in Recent 

 species, and very unequal, with a few granules on the outer surface. 



The arrangement of tubercles and of marginal spines is unlike 

 any species yet described. 



The portion of a manus from Bainbridge Island has finer granules 

 between tubercles. 



Measurements. — Length of holotype 18.4 mm., width to anterior 

 base of lateral spines 21.3 mm. 



Occurrence. — Washington : Restoration Point, Bainbridge Island, 

 Kitsap County. Blakeley formation, upper Oligocene. Holotype, a 

 specimen of carapace embedded in nodule, showing dorsal surface. 

 From the same locality, a second specimen was obtained someAvhat 

 larger than the type. University of Washington Loc. 164, N. Pac. 

 103, Loc. T. 1. Only the posterior and postero-lateral part of the 

 carapace is exposed, and a portion of the right cheliped. Posterior 

 width of carapace 7.4 mm. 



Washington : Shalj'^ sandstone beach from Alki Point south one- 

 fourth mile along shore of Puget Sound, Seattle; upper Oligocene; 

 H. Hannibal, collector, Stanford University (N. Pac. 48) ; a left 

 manus. 



