NEMATODE PARASITES OF BIRDS 167 



Parasitic usually under corneous tunic of gizzard of birds. 

 Type-species. — Cymea euryecrca Seurat, 1914c. 



KEY TO SPECIES OF CYRNEA 



1. Vulva immediately In front of middle of body Cyrnea excisa, p. 167. 



Vulva a considerable distance posterior to middle of body 2. 



2. Vulva prominent Cyrnea semilunaris, p. 171. 



Vulva not prominent 3. 



3. Left spicule 2.0 mm., right spicule 365/t long; male with 10 pairs of caudal 



papillae; tail of female 332/u. long Cyrnea colini, p. 168. 



Left spicule not over 1.7 mm., right spicule 3S0m or longer ; male with 9 

 pairs of caudal papillae : tail of female not over 285/i long 4. 



4. No papillae directly in front of cloacal aperture : caudal alae 410 to 550/* long, 



their span 275 to 390m Cyrnea seurati, p. 172. 



A pair of papillae directly in front of cloacal aperture; caudal alae about 

 290/n long, their span 250/z 5. 



5. Left spicule 1.7 mm., right spicule 380m long; tail of female 285m long; vulva 



720/i anterior to anus ; eggs 42m long by 18m wide_ Cyrnea eurycerca, p. 167. 

 Left spicule 1.3 mm., right spicule 490m long ; tail of female 140/t long ; vulva 

 1.14 mm. anterior to anus; eggs 52m long by 24/* wide. 



Cyrnea parroti, p. 171. 



Physaloptera bulbosa (p. 310), recently transferred to Cyrnea (see 

 Addenda, p. 390), may be differentiated from the above species in 

 that the vulva is in the posterior part of body and the spicules 

 measure 2.45 mm. and 945m long, respectively. 



CYRNEA EURYCERCA Seurat. 1914 



Hosts. — Primary: Caccabis petrosa, Coturnix coturnix, and "per- 

 dix rouge "; secondary: Unknown. 



Location. — Under tunic of gizzard. 



Morphology. — Cyrnea (p. 166) : Male 6.1 to 10.5 mm. long by 250m 

 wide (fig. 239c). Buccal cavity 55m l° n g> muscular esophagus 285m 

 long ; total length of esophagus 2.5 mm. Excretory pore and sensory 

 papillae 280m from anterior end. Caudal alae (fig. 239&) outspread, 

 short, the semilunar wings transversely striated, 290m l° n ^ a little 

 greater than the span from margin to margin, 250m- Nine pairs of 

 long pedunculated papillae, of which 3 are preanal; in addition a 

 pair of very small papillae directly anterior to the cloacal aperture. 

 Left spicule 1.68 mm., right spicule 380m long. Gorgeret 70m long. 



Fern-ale 14.7 to 20.5 mm. long. Tail (fig. 239a) attenuated, rounded 

 at end, 285m l° n g- Vulva not salient, 720m anterior to anus. Vesti- 

 bule 1.05 mm. long. Eggs 42m l° n ^ by 1% wide, with thick shell. 



Life history. — Unknown. 



Distribution. — Europe (Corsica) and Africa (Algeria). 



CYRNEA EXCISA (Molin, I860) Seural. 19Hc 



Synonym*. — Spiroptera excisa Molin, 1860; Physaloptera striata 

 Linstow, 1883. 



