[Figs. 26S-270. Taenia nigropunctata. After Crety, 1890.] 



Fig. 268. Head: v, sucker; c, neck. After Crety, 1890, fig. 3. 

 Fig. 269. Isolated segment: 1, eggs; m, ovary; p. genital pore; 



u, uterus. After Crety, 1890, fig. I. 

 Fig. 270. Kgg witli oncosphere. After Crety. 1890, fig. 2. 



Plate XXI, Figs. 271-274.— Taenia malleus, Idiogenes otidis and 

 Taenia sp. Conard, MS. 



Fig. 271. Taenia malleus, head and anterior segments. Aftar 

 Goeze, 1782, Tab. XXX, fig. 3. 



[Figs. 272-274. Idiogenes otidis.] 



Fig. 272. Pseudoscolex and anterior portion of strobila. The 

 first four segments form the pseudoscolex. After 

 Zschokke, 1888, PI. Ill, fig. 39. 



Fig. 273. Segment with male and female organs: ed., vas defer- 

 ens; c. e., vas efferens; ci., cirrus; t., testicles; f. d. 

 v., end of vagina (receptasulum seminis); gl. g., 

 ovary; gl. v., vitellogene gland; va.. vagina. After 

 Zschokke, 1888, PI. Ill, fig. 42. 



Fig. 274. Segment with developed uterus: cap. ut., superior 

 uterine cavity; c. d., vas deferens; p. d. c cirrus 

 pouch; va., vagina After Zschokke, 1888, PI. III. fig. 

 46. 



[Figs. 27.5,276. Two diagrams of Taenia sp. from chickens. 

 After Conard, unpublished.] 



Fig. 275. Dorsal view; fig. 276, transverse section: n.. nerve; d. 

 c, dorsal canal; v. c. ventral canal; t. c. transverse 

 canal; g. c, genital cloaca with pore; c. cirrus; c. 

 p.. cirrus pouch; v. s.. vesicula seminalis; t., testicle; 

 ut., "probably uterus" for testicle?); v., vagina; r. s.. 

 receptaculum seminis; ov.. probably ovary; s. g., 

 probably shell gland; 1. m.. longitudiral muscles. 



42 II 



