HELMINTH PARASITES OF BIRDS — DENTON AND BYRD 181 



tal organs; (4) position of the genital pore; (5) position and shape 

 of vitellaria; (6) course of the uterus; and (7) size of ova. Our 

 material differs from Pande's in having the intestinal bifurcation 

 more posterior in position ; it lies dorsal to the cephalic portion of the 

 acetabulum, with the result that the genital pore is anterior to the 

 intestinal bifurcation in our specimens, while it is posterior to the 

 bifurcation in the material described by Pande. 



Brachylecithum eophonae described by Yamaguti (1941) from a 

 finch, Eophona 'personata, seems to differ from B. stunhardi only in 

 having slightly larger ova. We consider the two forms to be synony- 

 mous. Furthermore, we are of the opinion that the material from 

 Corvus corone described briefly and figured by Braun (1902, plate 6, 

 figure 66) as Lyperosomum sp. is unquestionably a representative of 

 B, stunhardi. 



Bmchylecithwn stunhardi is closely related to B. lobatum (Kail- 

 liet, 1900) and may possibly be a synonym of it. As pointed out by 

 Travassos (1944, pp. 210-212) considerable confusion concerning the 

 characteristics of B. lobatum exists, resulting from authors' confus- 

 ing it with L. longicauda (Kudolphi, 1809), and possibly with other 

 similar forms that occur in the same host group. Until adequate de- 

 scriptions of B. lobatum and L. longicauda are available for compari- 

 son and the confusion concerning these forms is cleared up, we feel 

 justified in retaining B. stunhardi as a separate species. 



BRACHYLECITHUM EXOCHOCOTYLE, new species 

 FiGTJKE 38, C, A 



Diagnosis.— Bodij elongated, slightly flattened, 1.42 to 2.50 mm. 

 long by 0.28 to 0.59 mm. wide, widest in region of vitellaria. Cuticle 

 aspinose, finely striated transversely, with small retractile sensory 

 papillae on margins of anterior third of body. Oral sucker subtermi- 

 nal to a short liplike projection, 0.16 to 0.18 mm. long by 0.15 to 0.17 

 mm. wide. Acetabulum large, 0.22 to 0.28 mm. long by 0.28 to 0.35 mm. 

 wide, with a small, flat, conical thickening on each lateral margin, 

 located about one-sixth of body length from anterior end. Katio of 

 width of oral sucker to acetabulum 1 : 1.8 to 1 : 2.1. Pharynx 0.05 to 

 0.07 mm. long by 0.06 to 0.09 mm. wide. Esophagus narrow, slightly 

 wavy, 0.09 to 0.13 mm. long, bifurcating about two-thirds the distance 

 from oral sucker to acetabulum. Ceca slender, slightly sinuous, termi- 

 nating a short distance posterior to vitellaria. Excretory pore termi- 

 nal. Genital pore median, ventral to intestinal bifurcation. Testes 

 conspicuously large, transversely oval, 0.14 to 0.25 mm. long by 0.22 to 

 0.46 mm. wide, located one immediately behind the other, with anterior 

 one contiguous to or slightly overlapping zone of acetabulum. Cirrus 

 sac large, oval, 0.13 to 0.19 mm. long by 0.08 to 0.13 mm. wide, contain- 



