KO. 2267. 2fEW BRANCHIOBDELLID WORMS— ELLIS. 261 



Creek, Bainbridge, Pennsylvania (B. A. Bean), on Cambarus bar- 

 tonli (Fabricius); 14 (7=Cat. No. 1TG95, U.S.N.M.), Stoney Man 

 Mountain, Virginia (Palmer and King), on Cambarus bartonii 

 (Fabricius); ten (T=Cat. No. 17G9G, U.S.N.M.), North Fork of 

 Blackwater, Conrtland, West Virginia (U.S.F.C.), on Cambarus bar- 

 tonii cariniroatris Hay; ten (2=Cat. No. 17G97, U.S.N.M.), Raleigh, 

 North Carolina (C. S. Briniley), May, 1915, on Cambarus bartonii 

 acuminatus Faxon and Cambarus latlmanus LeConte (det. Faxon) ; 

 one (Cat. No. 17698, U.S.N.M.), Wytheville, Virginia (M. McDon- 

 ald), on Cambarus bartonii (Fabricius); one (Cat. No. 17699^ 

 U.S.N.M.), Cabin John, Maryland (McAtee and Wood), on Cam- 

 barus bartonii (Fabricius) ; one (Cat. No. 17700, U.S.N.M.) Scho- 

 larie Creek, Green County, Catskills, New York (E. A. Mearns), 

 (a\ Cambarus ba7-tonii (Fabricius) ; two (one=Cat. No. 17701, 

 U.S.N.M.), Spring Branch, 3 miles east of Mammoth Cave, Ken- 

 tucky' (W. P. Hay), on Cambarus bartonii tenebrosus Hay; two 

 (Cat. No. 17702, U. S. N. M.), Left Hand fork of Middle Fork of 

 Valley, Cassiday, West Virginia (U.S.F.C.), on Cambarus obscurus 

 Kagen: two (one=Cat. No. 17705, U.S.N.M.), East River, West 

 Virginia, on Cambarus bartonii (Fabricius) ; four (Cat. No. 17703, 

 U.S.N.M.), Trubies Run, West Virginia (U.S.F.C.), on Camharus 

 obscurus Hagen; two (one=Cat. No. 17701, U.S.N.M.), between 

 Paoli and Wyandotte, Indiana (O. P. Hay), on Cambarus rusticus 

 Girard; two' (Cat. No. 17706, U.S.N.M.), St. Marys River, Fort 

 Wayne, Indiana; five (2=Cat. No. 17707, U.S.N.M.), Bluffton, 

 Indiana (E. B. Williamson), on Cambarus rusticus Girard; 10, 

 Rhinelander, Wisconsin (G. Hansen), on Cambarus dlogenes Girard 

 (det. Faxon); 50 (4=Cat. No. 17708, U.S.N.M.), Maple River, 

 Douglas Lake, Michigan, summers of 1914, 1915, and 1916 (M. M. 

 Ellis) on Camharus propinquus Girard and Cambarus vlHlis Hagen 

 (det. Faxon) ; 25 (4=Cat. No. 17709, U.S.N.M.), Bloomington, In- 

 diana (Will Scott), May, 1915, on Cambarus fro-plnquus Girard 

 (det. Faxon); 200 (10=Cat. No. 17710, U.S.N.M.), Wliite River, 

 Irondale, Anderson, Indiana, summers of 1914, 1915, and 1916 (M. M. 

 Ellis) on Cambarus rusticus Girard (det. Faxon) ; 10 (4=Cat. No. 

 17711, U.S.N.M.), Oxford, Ohio (S. R. Williams); 10 (2=Cat. 

 No. 17712, U.S.N.M), North Judson, Indiana (P. S. Welch). 



In the original description of this species Leidy ^ gives the follow- 

 ing: " Head campanulate, terminated b}' a circular or elliptical cre- 

 nated lip, fringed with very minute stiff hairs; dental plates brown, 

 nearly equal, forming an isoceles triangle, with the base longest and 

 attached, apex of superior plate ending in a sharp conical point 

 with several minute denticulations on each side; apex of inferior 



iProc. Acad. Nat. Scl. Phlla., 1851, p. 209. 



