114 



ILLINOIS BIOLOGICAL MONOGRAPHS 



[402 



scorpii nearly so small were at hand for study, the writer cannot say that such 

 characters do not exist in the latter. On the whole it seems best to consider 

 B. angustatus a species inquirenda until more and better material can be studied 

 and comparisons made between the form that appears here in America and that 

 which is found in Europe. 



BOTHRIOCEPHALUS CLAVICEPS (Goeze 1782) 



[Figs. 19, 20, 23, 72, 85, 96] 



1722 Vermis multimembris Leeuwenhoek 1722 : 490 



1780 Taenia anguillae (part.) MuUer 1780 : 208 



1782 Taenia claviceps Goeze 1782 : 414 



1786 Taenia claviceps Batsch 1786 : 211 



1786 Taenia anguillae Batsch 1786 : 233 



1790 Taenia anguillae Gmelin 1790 : 3078 



1790 Taenia claviceps Schrank 1790 : 46 



1800 Rhytelminthus anguillae Zeder 1800 : 215 



1801 Taenia claviceps Rudolph! 1801 : 103 



1802 Taenia anguillae Bosc 1802 : 307 



1803 Rhytis claviceps Zeder 1803 : 293 

 1810 Bothriocephalus claviceps Rudolphi 1810 : 37 

 1816 Bothrioc. claviceps Lamarck 1816 : 582 

 1819 Bothrioc. claviceps Rudolphi 1819 : 136, 472 

 1819 Bothrioc. claviceps Leuckart 1819 : 49 

 1824 Bothrioc. claviceps Nitzsch 1824 : 97 



1844 Bothrioc. claviceps Belilngham 1844 : 251 



1845 Bothrioc claviceps Dujardin 1845 : 618 

 1848 Bothrioc. claviceps Siebold 1848 : 147 

 1850 Dihothrium claviceps Diesing 1850 : 589 



1853 Bothrioc. claviceps Baird 1853 : 89 



1854 Dibothrium claviceps Diesing 1854 : 578 

 1859 Dibothrium claviceps Polonio 1859 : 225 

 1859 Dibothrium claviceps Molin 1859 : 8 

 1863 Dibothrium claviceps Diesing 1863 : 241 

 1867 Bothrioc. claviceps Olsson 1867 : 56 

 1885 Bothrioc. claviceps Carus 1885 : 120 



1892 Bothrioc. claviceps Matz 1892 : 108 



1893 Bothrioc. claviceps Olsson 1893 : 16-17 

 1896 Bothrioc. claviceps Ariola 1896 : 280 



1899 Bothrioc. claviceps Liihe 1899 : 43 



1900 Bothrioc. claviceps Ariola 1900 : 393 

 1902 Bothrioc. claviceps Fuhrmann 1902 : 441, 447 

 1910 Bothrioc. claviceps Liihe 1910 : 25 



