NEMATODE PARASITES OF BIRDS 269 



collar and the cervical papillae in this variety there are very marked 

 transverse cuticular striations (fig. 331) and a swelling in the region 

 of the cervical papillae. 



Life history. — Unknown ; see S. pectinifera, p. 26G. 



Distribution. — Asia (Russian Turkestan). 



STREPTOCARA DECORA (Dujardin, 1845) Skrjabin. 1916b 



Synonyms. — Dispharagus decorus Dujardin, 1845; Histiocephalus 

 decorus (Dujardin, 1845) Diesing, 1851; Yseria decora (Dujardin, 

 1845) Gedoelst, 1919; Prionostemma decorum (Dujardin, 1845) 

 Gendre, 19206. 



Host. — Primary: Alcedo ispida; secondary: Unknown, see S. 

 pectinifera, p. 266. 



Location. — Between the tunics of the gizzard. 



Morphology. — Streptocara (p. 264) : Collar (fig. 332 a) in form 

 of denticulate cordons which surround circularly 2 lateral convex 

 lobes. Cuticle transversely striated, capable of being swollen be- 

 hind the head, according to Dujardin. Cervical papillae tricuspid, 

 situated 120/* posterior to head end. 



Male 3.6 mm. long by 110/* wide. Cloacal aperture 130/* from 

 tail end (fig. 3326). Four pairs of preanal, 3pairsof postanal papil- 

 lae. Spicules very unequal, the longer measuring 237/« long by 8.3/* 

 wide, the shorter 68/* long by 14/* wide. 



Female 8 mm. long by 200/* wide. Anus 130/* from tail end. Vulva 

 500/* from tail end. Eggs peculiar; they are 39/* long, flattened in 

 one direction where they are no wider than 23/* whereas they are 

 enlarged in the other direction to 31.5/* by two lateral and opposed 

 rows of 3 to 5 rounded tubercles. 



Life history. — Unknown ; see S. pectinifera, p. 266. 



Distribution. — France. 



Gedoelst placed this species in his new genus Yseria but he evi- 

 dently had not seen Skrjabin's paper at that time. Subsequently 

 Gendre stated that the head ornamentations differed from those of 

 Yseria coronata and Y. calif omica and transferred it to his new 

 genus Prionostemma, this genus, however, proving to be synonymous 

 with Seuratia. Although the denticulated collar of S. decora is 

 somewhat different, in appearance from the majority of species of 

 Streptocara, it is not as highly developed as in Seuratia and the 

 body does not have spines as in the latter genus; the present writer 

 has consequently left it in Streptocara as placed by Skrjabin. 



STREPTOCARA RECTA (Linstow. 1879) Skrjabin. 1916b 



Synonyms. — FUaria recta Linstow 1879; Spiroptera recta (Lins- 

 tow, 1879) Mueller, 1897. 



