220 BULLETIN 140, UNITED STATES NATIONAL MUSEUM 



Schneider (1866) reexamined Rudolphi's material and removed from 

 it a species from one host, Coraeim garrula, as Filaria capitellata 

 Schneider, 1866. Under the name of Filaria anthuris he redescribed 

 Rudolphi's species, restricting it to specimens from Corvus gland- 

 arius. Mueller (1897) has described a new species, Dispharagus 

 cordatus, of which A. anthuris is a synonym in part, stating that 

 D. cordatus is actually the species which Molin and Dujardin have 

 incorrectly described as A. anthuris; it showed distinct differences 

 from that described by Schneider and later by Linstow. In addi- 

 tion, A. anthuris is a synonym in part of Oxyspirura sygmoidea 

 Diesing, 1851. 



ACUARIA ATTENUATA (Rudolphi, 1819) Railliet, Henry, and Sisoff, 1912 



Synonyms- — Spiroptera attenuata Rudolphi, 1819; Dispharagus 

 atten/uatus (Rudolphi, 1819) Dujardin, 1845. 



Hosts. — Primary : Hirundo urbica, H. rustica, H riparia; sec- 

 ondary : Unknown. 



Location. — Between the tunics of the gizzard. 



Morphology. — Acuaria sensu stricto (p. 216) : Body very slender. 

 Head 40/x wide. Mouth with 2 lateral papilliform lips. Cordons 

 thick and sinuous. Buccal cavity narrow, 170/x long. Anterior esoph- 

 agus 540/t long, posterior esophagus 1.45 mm. long by 52//. wide. 



Male 7 mm. long. Caudal extremity twisted once or twice in a 

 spiral; caudal alae long and with double margin. 



Female 18 mm. long by 130/* wide. Vulva with 2 large lips and 

 situated in posterior part of body, 10.5 mm. from the head and 7.5 

 mm. from the tail. Anus 160/* from tail end. Eggs only 15/* long, 

 according to Dujardin, who questions whether they are fully 

 developed. 



Life history. — Unknown: probably involves intermediate stages 

 in other hosts. 



Distribution. — Europe (Austria (Vienna Museum)). 



ACUARIA CORD ATA (Mueller, 1897) Gendre, 1920 



Synonyms. — Spiroptera anthuris Rudolphi, 1819 of Dujardin, 

 1845, and of Molin, I860.; Dispharagus cordatus Mueller, 1897. 



Hosts. — Primary : Lanius rufus, L. curullio; secondary : Unknown. 

 Mueller regards his D. cordatus as identical with S. anthuris of 

 Dujardin ; the hosts for the latter are Corvus glandarius, G. pica, C. 

 frugilegus, C. corax, C. corone, C. comix, Goracias garrula, Oriolus 

 galbula, Pyrrhocorax alpinus. Other hosts listed are Gorvus caryo- 

 catactes, G. corax tingitanus, G. pyrrhocorax, C . americanus, Garru- 

 lus glandarius, Nucifraga caryocatactes, Pica caudata and Urocissa 

 occipitalis. Some of these hosts may be regarded as doubtful; the 



