88 ASCAKOIDEA 



35. Fimbrilla Cobb, in Stiles & Hassall, 1905. 



Syn. Fimbria Cobb, 1894, nee Megerle, 1811. 



Cuticle striated, with bristles at least at posterior end. 

 Head somewhat distinct, with a crowai of bristles. Buccal 

 capsule prismoid. Oesophagus expands gradually behind. 

 Caudal end of male without alae or supplementary organs. 

 Two accessory pieces, nearly as long as the spicules, joined 

 posteriorly and protrusible. Female unknown. 



Hab. Marine (among seaweed). 



Genotype : F. [Fijnbria] tenuis (Cobb, 1894). 



Cobb, 1894, Proc. Linn. Soc. N.S.W., Sydney, viii, 421; 

 Stiles & Hassall, 1905, U.S. Dept. Agric, Bur. Anim. Indust. 

 Bull. 79, 107. 



36. Antieyathus Cobb, 1920. 



Cuticle very finely striated, with scattered papilloid cervical 

 bristles. Head not distinct, with two crowns of short bristles. 

 Lateral organs circular. Buccal capsule very small, prismoid. 

 Oesophagus club-shaped. Caudal end of male with twenty- 

 five papilloid preanal supplementary organs and a single 

 papilla-like ventral bristle. An accessory piece, with a 

 posterior process, present. Testes and female genital tubes 

 paired, opposed, outstretched. Caudal glands and spinneret 

 absent. 



Hab. Marine (in sand). 



Genotype : A. tenuicaudatus Cobb, 1920. 



Cobb, 1920, Contr. Sci. Nematol., ix, 245 and key. 



37. Sphaerocephalum Filii^jev, 1918. 



Cuticle finely striated. Head with six small papillae, ten 

 long and fine bristles and some supplementary bristles. Lateral 

 organs spiral (apparently circular in figure). Buccal capsule, 

 according to figure, extremely short and narrow, with wall 

 gradually thickened posteriorly, giving it the appearance of a 

 cone. Oesophagus slightly swoUen at each end, but without 

 bulb. Tail of female very thick, with subterminal spinneret. 

 Female genital tubes paired, opposed, outstretched; the 

 posterior without ovary. Male unknown. 



Hab. Marine. 



Genotype : S. crassicauda Filipjev, 1918. 



Filipjev, 1918, Trav. Lab. ZooL, Stat. Biol. Sebastopol, 

 Ser. 11, No. 4, 317, 328. 



Appendix to Trilobidae. 



The following genera are doubtfully referred to this family. 

 The position of several of them is very uncertain, and can only 



