48 



U.S. NATIONAL MUSEUM BULLETIN 259 



Hubricht, Mar. 13, 1938 (LH, in part); Lancaster Co.: seep in limestone outcrop 

 in Gables Woods near Lancaster, J. W. Price, Mar. 29, 1936, Apr. 9, 1936, and 

 Mar. 23, 1937; Pequea Silver Mines, 5 miles S of Lancaster, J. W. Price, May 12, 

 1947; Refton Cave, at Refton, J. W. Price, 8 collections between 1935 and 1941; 

 Refton Cave, K. Dearolf, Jan. 9, 1937. 



Diagnosis. — Distinguished by the large, elongate 1st gnathopodal 

 propod which is up to twice the size of 2nd propod; distal excavation 

 in palmar margin of propod of gnathopod 1 in large males; ventraUy 



Figure 10. — Siygonedes pizzinii (Shoemaker). Male (13.50 mm), Reftons Cave, Pa.: a.i, 

 antennae 1,2; c,d, pereopods 5,6; e,f, uropods 1,2. 



