THE FOSSIL STALK-EYED CRUSTACEA 111 



Minor chela. — Three smaller propodites (5455) with finger at- 

 tached appear to be narrower and smoother than those above 

 described. They may represent the minor chela. 



Wrist. — One specimen about 21 mm. long by 15 wide has the 

 shape of a major carpus (pi. 25, fig. 9). The small piece of the 

 outer shell visible is smooth. The inner shell is solidly covered with 

 small, interlacing raised rings or half rings, in some of which there 

 is a tubercle. The convexity of the article is similar to that of the 

 manus. 



Arm. — Two narrower, suboval pieces resemble in shape the minor 

 merus of the first pereiopod. The surface of an inner layer of the 

 larger specimen is covered with low oblong tubercles placed close 

 together. The smaller specimen shows a smooth outer layer with 

 dark mottlings. 



Measurements. — Right propodus of cheliped, holotype, length 

 measured from upper base of finger directly back, 16 mm., greatest 

 height 15.7 mm., superior length 17.2 mm., length of finger, tip 

 lacking, 11 mm. Right manus (237), length measured from upper 

 base of finger directly back, 15.4 mm., greatest height 17.6 mm. 



Occurrence. — Washington, Oregon ; Eocene. 



WASHINGTON 



Olequa Creek, one-fourth mile above Vader Station, Lewis County, 

 in east bank, just north of where small creek enters Olequa on east; 

 section 29, township 11 north, range 2 west; six specimens of the 

 right manus and one of the left. 



West bank of Olequa Creek about one-eighth mile north of Vader 

 Station; section 29, township 11 north, range 2 west; 9 specimens 

 of the right manus, 13 of the left manus (1 with finger), 2 movable 

 fingers and a fragment of the abdomen showing 4 segments. 



Railroad bluff about I1/2 miles south of Vader, about 700 feet 

 below railroad post No. 79; section 4, township 11 north, range 2 

 west ; 7 specimens of the right manus and 8 of the left. 



Rock bluff in Northern Pacific Railway cut 2,850 feet south of 

 mile post 76 and three-fourths mile north of Olequa railway sta- 

 tion; upper Eocene or Tejon; three specimens of the right manus 

 and one of the left. 



WESTERN OBEGON 



Basket Point, on Umpqua River, about 12 miles below mouth of 

 Calapooia River; middle Eocene series. Propodus (palm and 

 finger) of right cheliped, holotype; also 8 additional specimens of 

 the propodus, one of the carpus, and two of the merus. Holotype, 

 Cat. No. 353328, U.S.N.M. 



