NEMATODE PARASITES OF BIRDS 



215 



middle of body, apparently 10/19 of body length from head end. 

 Ovejector 260/u, long by 46/x, wide, directed posteriorly and without 

 a distinct vestibule. Eggs thick-shelled, 35 to 39ju long by 21 to 23ju, 

 wide. 



Life history. — Unknown; probably involves intermediate stages 

 in other hosts. 



Distribution. — Africa (Dahomey) . 



This species belongs in Acuaria sensu stricto or Cheilospimra, ap- 

 parently, but can not be definitely placed until the male characters 

 are known. 



ACUARIA QUADRILOBA (Rudolphi, 1819) Railliet. Henry, and Sisoff. 1912 



/Synonyms. — Spiroptera quad/ % Uoba Rudolphi, 1819; FUaria quad- 

 riloba (Rudolphi, 1819) Schneider, 1866; Dispharagus quadrUobus 

 (Rudolphi, 1819) Dujardin, 1845; Dispharagus crassus Molin, 1860c. 



Hosts. — Primary: Dryocopus martini, Picus martins, P. viridis, 

 Hylomotus pileatus, Gecinus viridis; secondary : Unknown. 



Location. — Esophagus. 



Z79. 



Figs. 278-279. — 278, Acuaria ptilopachydis. a, Anterior end ; b, female tail. 

 After Gbndre, 1920. 279, Acuaria quadriloha. Head, front view. After 

 Schneider, 1866 



Morphology. — Acuaria sensu lato (p. 212) : Body somewhat thick, 

 more slender anteriorly. Cordons strongly developed with recurrent 

 loops extending almost to the head end; whether anastomosing or 

 not is not stated. Mouth (fig. 279) with 2 thick, papilliform lips 

 and surrounded by small, slightly salient papillae. 



Male unknown. 



Female 9 to 11 mm. long by 400/* wide. Caudal extremity taper- 

 ing quite suddenly; apex obtuse. Anus near caudal apex. Vulva 

 in posterior part of body, three-fourths of distance from head. 



Life history. — Unknown; probably involves intermediate stages 

 in other hosts. 



Distribution. — Europe (Germany (Vienna Museum and Berlin)) 

 and North America (Philadelphia, Pa.). 



3612— 27- 



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