228 



BULLETIN 140, UNITED STATES NATIONAL MUSEUM 



Morphology.— Cheilospirura (p. 226) : Mouth with 2 large lateral 

 lips (fig. 2916), rounded anteriorly, each with 2 pedunculated papil- 

 lae and a triangular area between them on' the external surface. 

 Four double cuticular cordons (fig. 291c) extending from the mouth, 

 which is far anterior, along the margins of the lips and then along 

 the submedian lines. Cervical papillae small, just posterior to origin 

 of the esophagus, and hence about at the anterior fifth of the length 

 of the cordons (fig. 291a). 



Male 10.19 to 13.83 mm. long by 160 to 180/* wide. Caudal alae 

 (fig. 291^) with 2 concentric zones, the inner transversely striated, 

 the outer more or less scalloped and granular. Four pairs of preanal 

 and 6 pairs of postanal pedunculated papillae. Spicules (fig. 291 e 



Fig. 291. — Cheilospirura gruveli. a, Anterior end; b, head; c, cordon; 



d, FEMALE TAIL. AFTER GENDRE, 1912. C, RIGHT AND f, LEFT SPICULE; ff, 

 MALE TAIL. AFTER GENDBEj 1913 



and /) very dissimilar and unequal, the left 560/x and the right 

 170/a long. 



Female 28.9 to 42.74 mm. long by 220 to 270^ wide. Cordons 

 1.15 mm. long. Tail (fig. 2916?) 1/128 to 1/144 of total body length. 

 Pharynx or buccal cavity 180 to 280/a long; anterior esophagus 

 990ju. to 1.24 mm. long; posterior esophagus 2.01 to 2.38 mm. long. 

 Vulva conspicuous near middle of body, about 10/22 of length from 

 head. Eggs thick-shelled, 33ju, long by 22/a wide, embryonated when 

 oviposited. 



Life history. — Unknown; probably involves intermediate stages 

 in other hosts. 



Distribution. — Africa (Dahomey) and Europe (Spain). 



