NO. 1105. 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



155 



The genus Andrya was proposed by Eailliet in the following words: 

 II n'est pas douteux, bien que leur e"tude anatoiuique soit encore peu avanc6e, que 

 lea anoploc6phalinos des Rongeurs, pourvns de pores genitaux alternes, doivent otre 

 se'pares g<5n<5riquement de ceux des Equides, qui ont les pores genitaux imilate"raux. 

 Nous en faisons done le genre Andrya, d'apres le Tccnla rhopalocephala Riehm, et en 

 1'honneur de Nicolas Andry, le savant me"decin du XVII e siecle, qui a contribud 1'un 

 des premiers a dlucider Thistoire des Teniades. 



Besides the type-species, Eailliet placed here Tcenia rhopaliocephala^ 

 Eiehm (= Anoplocephala cuniculi, E. Blanchard) 5 and T. wimerosa, 

 Moniez. The latter species I return to the genus Anoplocephala (p. 151). 

 In my preliminary note in 1895 I placed an American form (Andrya 

 americana) in Eailliet's genus, but since examining Meyner's specimens 

 of Bertia mucronata I am inclined to transfer A. americana to the genus 

 Bertia, see p. 165. Eegarding the validity of the genus Andrya, see p. 

 1G4. Of Eiehm's original material I have obtained the following speci- 

 mens: 



Cotypes of Eiehm's Tcenia rhopalocephala and Tcenia rhopaliocephala. 



All of these specimens were evidently originally determined by 

 Eiehm, who, however, trusted too much to the external form of the 

 segments, for a careful comparison of the worms with Eiehm's figures 

 and description shows that some of the specimens were misdetermined. 



Eiehm states that his T. rhopalocephala was found only in Lepus 

 timidus^ while T. rhopaliocephala (= Andrya cuniculi} was confined to 

 Lepus cuniculus. Whether the discrepancies between his labels and 

 this statement are due to an error in host determination or an error in 

 writing the labels of the specimens is a point which, of course, can not 

 now be settled. For the present I adopt his statements and assume an 

 error in the labels. If both host determination and labels are correct, 

 then Andrya cuniculi must also occur in Lepus timidus. This point 

 must be settled by new collection of material. 



None of the specimens are in very good condition, on which account 

 I am unable to enter into a detailed study of the organs. My observa- 

 tions, however, lead me to accept both species as well founded, and my 

 results agree in general with those obtained by Eiehm. 



ANDRYA RHOPALOCEPHALA (Riehm, 1881), Stiles, 1895. 



(Plates VII, figs. 1-7; VIII, 1-3.) 

 11800, Alyselminthus pectinatus (GoKZE, 1782), ZEDER, Erster Nachtrag z. Naturg. der 



Eingeweidewurmer, Leipzig, p. 246-249. 



? 1803, Halysis pectinata (GoEZE, 1782), ZEDER, Anleitung z. Naturg. der Eingeweide- 

 wiirmer, p. 332. 



