. Bulletin - United States National Museum. igure 25 Synpleonia clantoni Creaser, 1934, pp. 1-5, pi. 1 [Type locality: well, 4 miles SEof Ottawa, Franklin Co., Kans.].—Schellenberg, 1936, p. 40.—Mackin, 1941,p. 30 (in part).—Hubricht, 1943, p. 711 (in part).—Barnard, 1958, p. 74.—Hubricht, 1959, p. 878 (in part).—Nicholas, 1960, p. 130 (in part). [NotDearolf, 1941, p. 171; 1948, p. 20; 1953, p. 228 (?).] Material examined KANSAS.—Franklin Co.: well on Clanton Farm, 4 miles SE of Ottawa, maleholotype (USNM 98401), female allotype (USNM 98402), and male paratype(USNM 80526), W. Clanton, Aug. 28,
. Bulletin - United States National Museum. igure 25 Synpleonia clantoni Creaser, 1934, pp. 1-5, pi. 1 [Type locality: well, 4 miles SEof Ottawa, Franklin Co., Kans.].—Schellenberg, 1936, p. 40.—Mackin, 1941,p. 30 (in part).—Hubricht, 1943, p. 711 (in part).—Barnard, 1958, p. 74.—Hubricht, 1959, p. 878 (in part).—Nicholas, 1960, p. 130 (in part). [NotDearolf, 1941, p. 171; 1948, p. 20; 1953, p. 228 (?).] Material examined KANSAS.—Franklin Co.: well on Clanton Farm, 4 miles SE of Ottawa, maleholotype (USNM 98401), female allotype (USNM 98402), and male paratype(USNM 80526), W. Clanton, Aug. 28, 1928; Dunkak Well, miles NE of Lane,L. Hubricht, Aug. 31, 1941 (LH); Butler Co.: Purity Springs, J. R. Holsinger andR. Norton, June 12, 1964 (JRH); Rutherford Cave, 6 miles S of El Dorado,L. Hubright, May 18, 1942 (LH). Missouri.—Cass Co.: well at Harrisonville,A. D. Newman, Aug. 21, 1915 and Feb. 24, 1917 (USNM); Camden Co.: RiverCave at Hahatonka, L. Hubricht, June 22, 1946 (LH). SUBTERRANEAN AMPHIPOD STYGONECTES 103. Figure IS.—Stygonedes clantoni (Creaser). Male ( mm), well at Harrisonville, Mo.:a, coxal plate of pereopod 3; h-e, pereopods 4,5,6,7;/, uropod 3; g, pleopod 1; h, telson;i,j, gnathopods 1,2; k,l, antennae 1,2; OT,n, uropods 1,2; o, abdominal side ( mm); same locality: p, maxilliped; q, maxilla 2; r,/, left and right man-dibles; t, lower lip; u, maxilla 1. 104 NATIONAL MUSEUM BULLETIN 2 59 Diagnosis.—A large subterranean species distinguished by therather setose and spinose 4th and 5th peduncular segments of antenna2, broad 2nd palpal segment of maxilliped, broad posterior margins ofpereopod bases, and by having up to 25 relatively short apical spineson telson. Further distinguished from S. osarkensis, to which it issomewhat closely allied, by broader bases of pereopods, fewer apicalspines on 3rd uropod, absence of lateral spines on telson, proportion-ately shorter telson in the male, and larger size at matur
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