224 



BULLETIN 140, UNITED STATES NATIONAL MUSEUM 



of the submedian ones and extending to the base of the tail, these 

 cordons single and simpler than the others. 



Male 9.68 to 11.37 mm. long by 250 to 360/* wide. Tail 10/204 to 

 10/228 of total body length. Buccal cavity or pharynx 220 to 260/x 

 long; anterior esophagus 790 to 880/* long; posterior esophagus 2.08 

 to 2.68 mm. long. Caudal alae (fig. 287a) large and with 2 con- 

 centric zones, the internal transversely striated and the external 

 smooth. Four pairs of preanal and 6 pairs of postanal papillae. 

 Spicules (fig. 2876 and d) robust, 280 and 250/* long. 



Female unknown. 



Life history. — Unknown; probably involves intermediate stages 

 in other hosts. 



Distribution . — Africa ( Abomey ) . 



Fig. 288. — Acuaria tapillifera. Head and tail ends of male. After Lin- 

 stow, 1878 



ACUARIA PAPILLIFERA <Linstow, 1878) Railliet. Henry, and Sisoff, 1912 



/Synonyms. — Filaria papillifera Linstow, 1878 ; Dispharagus papil- 

 liferus Stossich, 1891. 



Hosts. — Primary : Sylvia palustris; secondary : Unknown. 



Location. — In stomach (gizzard?) wall. 



Moi^phology. — Acuaria sensu stricto (p. 216) : Cuticle trans- 

 versely striated. Head with 2 conical lips. Cordons (fig. 288) ex- 

 tend along submedian lines from lips posteriorly for 190/*. Cervical 

 papillae 160/*. from head end. According to Gendre, the esophagus 

 extends posteriorly beyond the limits of the cordons. 



Male 4.7 mm. long by 70/* wide. Esophagus 1/12, tail 1/28 of body 

 length. Caudal alae (fig. 288) wide. Four pairs of preanal and 8 

 pairs of postanal papillae, very prominent. Left spicule 150/* long, 

 right 98/* long. 



Female unknown. 



Life history. — Unknown ; probably involves intermediate stages in 

 other hosts. 



Distribution. — Not given. 



ACUARIA SUBULA (Dujardin, 1845) Railliet, Henry, and Sisoff, 1912 



Synonym.— Dispharagus subula Dujardin, 1845. 

 Hosts.— Primary : Luscinia rubecula (Sylvia rubecula) ; second- 

 ary: Unknown. 



Location. — Between tunics of gizzard. 



