367] ANOPLOCEPHALIDAZ— DOUTHITT 17 



then developing by regular anterior and posterior outpocketing. Eggs 

 with pyriform apparatus. Adults in mammals. 



Type-species : Andrya rhopalocephala Riehm 1881. 



Representing the genus Andrya, six species are known; besides 

 those here studied, these are rhopalocephala and cuniculi (for both of 

 which see Stiles, 1896). In addition, Parona (1900) has designated a 

 cestode from Dypus aegyptius as A. dipi, with no word of description. 

 As it is a pure nomen nudum, it can not be taken into consideration. 

 The six known species fall into two well-defined groups, the rank of 

 which it is difficult to decide. They are here treated as subgenera: 



1. Rhopalocephala-group. Testes mainly anterior. With a pe- 

 dunculated prostate gland opening into the vas deferens near the ven- 

 tral excretory vessel. Vas deferens not enlarged outside the cirrus 

 pouch to form a vesicula seminalis. Excretory ducts of normal dimen- 

 sions. Scolex normal in size. Four species. 



A. rhopalocephala Riehm A. primordialis Douthitt 

 A. cuniculi R. Blanchard A. communis Douthitt 



2. Macroccphala-grouY). Testes about uniformly anterior and 

 posterior, or mostly posterior. No prostate gland. Vas deferens en- 

 larged to form a vesicula seminalis outside the cirrus pouch. Excretory 

 ducts enormously developed. Scolex of more than ordinary size. Two 

 species : 



A. macrocephala Douthitt A. translucida Douthitt 



Anoplocephala wimerosa Moniez 1880 

 [Figure 17] 



Of this species but two specimens are at hand. Admittedly, this 

 is not sufficient material to form a basis for a satisfactory account of 

 anatomy; but there is need to know the structure of the older members 

 of this genus, for comparison with the better known new ones, which 

 do not fit old conceptions. A. wimerosa has been known for 33 years; 

 but it has received scanty attention, and several of the statements con- 

 cerning it I find to be in error. 



The specimens studied were taken from Lepus variabilis at Brian- 

 qou, France, by R. Blanchard in 1891. He gave several specimens to 

 Stiles, who, after he had studied them, divided the lot, presenting two 

 to the Ward Collection. These were placed at my disposal for study. 

 One is a toto mount and the other was sectioned. The account here given 

 is original, except for the statements applying to external form which 

 are taken from the account of Stiles (1896). 



