348 ILLINOIS BIOLOGICAL MONOGRAPHS [348 



EXPLANATION OF PLATE 



Fig. 174. — Proteoccphalus agonis (Barbieri), ripe proglottid. After Barbieri. 



Fig. 175. — Proteoccphalus sulcatus (Klaptocz), ripe proglottid. After Klap- 

 tocz. 



Fig. 176. — Proteoccphalus sulcatus (Klaptocz), proglottids. After Klaptocz. 



Fig. 177. — Proteocephalus skorikowi (von Linstow), ripe proglottid, toto. 

 After von Linstow. 



Fig. 178. — Proteocephalus fallax La Rue, mature proglottid, toto, showing re- 

 productive organs. After Kramer. 



Fig. 179. — Proteocephalus fallax La Rue, ripe proglottid, showing uterine 

 pouches and uterine pore. After Kramer. 



Fig. 180. — Proteocephalus fossatus (Riggenbach), proglottid with male organs. 

 After Riggenbach. 



Fig. 181. — Monticcllia coryphicephala (Monticelli), cirrus-pouch and vagina. 

 After Monticelli. 



Fig. 182. — Proteoccphalus osculatus (Goeze), mature proglottid. After Liihe. 

 Fig. 183. — Proteoccphalus ambloplitis (Leidy), ripe proglottid, frontal section 

 showing main parts of male and female reproductive systems. After Benedict. 



Fig. 184. — Proteoccphalus torulosus (Batsch), ripe proglottids showing organs. 

 After Kramer. 



Fig. 185. — Proteoccphalus agonis (Barbieri), mature proglottid, uterus omitted. 

 After Barbieri. 



Fig. 186. — Monticcllia coryphicephala (Monticelli), ripe proglottid, toto. After 

 Monticelli. 



