172 BULLETIN 140, UNITED STATES NATIONAL MUSEUM 



CYRNEA SEURATI Lopez-Neyra, 1918, emended 



Synonym. — Cyrnea seuratii Lopez-Neyra, 1918 ; Cyrnea scurati of 

 Lopez-Neyra, 1923, misspelt. 



Host. — Primary : Caccabis rufa; secondary : Unknown. 



Location. — Under corneous tunic of gizzard. 



Morphology. — Cyrnea (p. 166) : Body robust, white, translucent, 

 the blood-red intestine showing through the body wall. Cuticle 

 finely striated transversely. Two large lateral lips, rounded at free 

 edge, teeth-like projections on inner surface. Dorsal and ventral lip 

 with free edge notched. No lateral alae. 



Male 8 to 13.6 mm. long by 300 to 360 ft wide. Tail not rolled ; 

 caudal alae outspread, strongly striated transversely; their length 

 410 to 550/a, the span of the 2 alae 275 to 390/x,. Nine pairs of 

 long pedunculated papillae, of which 3 are preanal. Of the 6 post- 

 anal pairs, 4 pairs are small and grouped toward the caudal end. 

 No median papilla anterior to cloaca! aperture. Left spicule 1.25 to 

 1.39 mm., right spicule 450 to 500/* long. Gorgeret 65 to 70^ long. 



Female 13 to 17 mm. long by 320 to 420 /x wide. Tail (fig. 241) 

 140 to ISOfi long. Vulva not salient, 700 to 950/x anterior to anus. 

 Ovejector made up of small pyriform vestibule 300 to 420/x. long and 

 a tubular sphincter. Eggs 45 to 48/u, long by 25 to 26^ wide. 



Life history. — Unknown. 



Distribution. — Europe ( Spain ) . 



Genus HABRONEMA Diesing, 1861 



GeneHc diagnosis. — Spirurinae (p. 164) : Mouth with 4 lips. 

 Body usually with 1 or 2 lateral alae. Sensory papillae precervical. 

 Male with unequal spicules; postanal papillae asymmetrically dis- 

 posed. A gorgeret present. Female with vulva in median region of 

 body though it may be anterior or posterior of middle. Ovejector 

 with vestibule not differentiated as an organ for the storage of ejrsrs. 

 Uteri divergent. 



Parasitic in digestive tract, usually stomach, of birds and mammals. 

 Intermediate host, where known, arthropods (flies). 



Type-species. — Habronema muscae (Carter, 1861) Diesing, 1861. 



KEY TO SPECIES OF HABRONEMA 



1. No lateral alae present Habronema ficheuri, p. 174. 



One or more lateral alae present 2. 



2. Only one lateral ala present 3. 



Two lateral alae present although they may be poorly developed (//. 



ieurati) _ ^ 



3. Long slender spicule 2y 2 times the length of the short broad one; vulva 



prominent Habronema unilateralis, p. 186. 



Long slender spicule over 3 times the length of the short broad one ; vulva 

 not prominent _ 4 



