346 



BULLETIN 140, UNITED STATES NATIONAL MUSEUM 



Male 7.5 mm. long by 180/* wide. Filiform worms. Cuticle finely 

 striated transversely and with 4 longitudinal series of spines in the 

 lateral fields. Mouth (fig. 410) with 2 lips, buccal capsule cylindrical, 

 21/* long by 14/* wide. Pharynx 370/* long. Esophagus 950/* long. 

 Cloacal aperture 120//, from end of tail. Tail curved dorsally. Cau- 

 dal papillae absent or apparently very small. Small spicule 16/* 

 long ; large spicule 740/* long by 14/* wide and acutely pointed. 



Female 5 to 6 mm. long by 4 to 5 mm. wide. Transverse striations 

 of cuticle more prominent in anterior portion of body. Lateral 

 fields and median lines form four furrows. Ovejector with a sac- 

 cular diverticulum as in other species. Eggs 50/* long by 21/x wide, 

 containing embryos when deposited. 



Life history. — Probably similar in a general way to that of T. 

 fissispina (p. 343). 



Distribution. — South America (Brazil). 



Fig. 410. — Tetrameees gigas. Anterior and posterior ends of male. After 



Tkavassos, 1919 



TETRAMERES GLOBOSA (Linstow, 1879) Travassos, 1914d 



Synonym. — Tropidocerca globosa Linstow, 1879«. 



Hosts. — Primary: Fulica atra; secondary: Unknown; probably 

 similar in a general way to that of T . fissispina (p. 343). 



Location. — Proventriculus. 



Morphology. — Tetrameres (p. 334). 



Male unknown. 



Female globular, its two extremities slender projections. Cuticle 

 transversely striated. Buccal capsule circular with chitinous walls. 

 Pharynx 280/*; esophagus 780/* long. Anus 220/* from posterior ex- 

 tremity. Eggs thick-shelled, 39/* long by 29/* wide. 



Linstow states that this species differs from Tetrameres -fissispina 

 in absence of cervical papillae and of a double spine at the tail end. 



Life history. — Probably similar in a general way to that of T. 

 fissispina (p. 343). 



Distribution, — Locality not given. This species has evidently not 

 been found since Linstow's original report of it. 



