222 



BULLETIN 140, UNITED STATES NATIONAL MUSEUM 



Location. — Not given; presumably in proventriculus, gizzard or 

 esophagus. 



Morphology. — Acuaria sensu strict o (p. 216) : The edges of the 

 cordons sunk in the cuticula. 



Male with broad tail (fig. 285) the margins of the caudal alae 

 strongly developed and the alae with distinct transverse striation. 

 Nine pairs of caudal papillae, 5 pairs of these postanal. Spicules 

 short and thick, almost equal in length. 



Female 22 mm. long. 



Life history. — Unknown; probably involves intermediate stages in 

 other hosts. 



Distribution. — Africa ( Egypt ) . 



Figs. 285-286. — 285, Acuaria dbpressa. Male tail. After Schneider, 1866. 

 286, acuakia gracilis. a and b, anterior end; c, left and d, right spicule; 

 e, male tail ; f, female tail. after gendre, 1912 



ACUARIA GRACILIS (Gendre, 1912) Railliet, Henry, and Sisoff, 1912 



Synonyms. — Dispharagus gracilis Gendre, 1912; Acuaria similis 

 Gendre, 1913< . 



Hosts. — Primary : Buchanga atra assimilis and (?) Oriolus aura- 

 tus; secondary: Unknown. The Acuaria from O. auratus shows 

 certain differences from the A. gracilis from B. a. assimilis. 



Location. — Between the tunics of the gizzard. 



Morphology. — Acuaria sensu stricto (p. 216) : Head (fig. 286a 

 and b) with 2 large, conical, lateral lips, each with 2 papillae on its 

 external surface and with a triangular area, probably for the inser- 

 tion of muscles, between them. The 4 cordons, not projecting more 

 than the cuticular striations, extend along the submedian lines 220/* 

 in male and 38G> in female. Cervical papillae small, situated in 



