THE NEMATODE FAMILY GXATHOSTOMID.E. 



259 



1. Tanqua tiara* (v. Linst., 1879). (Text-fii?s 7-15; PI. III. 

 tigs. U-13.) 



Ascaris tiara v, Linstow (1879, p. 320 ; pi. v. fi^-. 1). 



„ Parana (.1898, p. 114). 

 Ctenoceplicdus tiara v. Linstow (1904 «. p. 102; pi. ii. figs. 



23-27). 

 Tanqua tiara E,. Blanchard (1904, p. 478). 

 „ Leiper (1908, p. 189). 



„ (in part) Baylis (1916, p. 224; text-fig. 1). 

 Tetradenos tiara v. Linstow (1904 h, p. 301). 



(1906, p. 173). 



The specimens from Tropiclonotus aspetrimus, previously re- 

 ferred by one of us (Baylis, 1916) to this species, have now been 



Text-figure 7. 



Tanqua tiara. The head ; dorsal (or ventral) view. 



redetermined as T. anomala (v. Linst.) (q. v.), T. tiara being- 

 restricted to the forms from various species of Monitor lizards 

 (Ya.ranidfe). The description of the caudal papillEe of the male of 

 T. tiara then given was correct, though the specimen figured ■ 

 (?. c, text-fig. 2, p. 226) was not T. tiara, but T. anomala, which 

 in this respect is hardly distinguishable from it. The structure 

 of the female genital apparatus was not completely elucidated, 

 and will be given here in greater detail. 



* For specific diagnosis, see p. 261. 



Proc. Zool. Soc— 1920, No. XYIIL 18 



