ANGUILLULINIDAE 75 



de Man, 1880, Tijdschr. Ned. dierk. Vereen., Leiden, v, 63; 

 18S4, Die frei . . . lebendenNematode^id. Niederl. Fauna, ISO; 

 Micoletzky, 1922, Arch. f. Naturg., Abt. A, Ixxxvii, 430. 



12. Ecphyadophora de Man, 1921. 



Body extremely slender. Cuticle apparently unstriated, 

 without bristles or alae. Head rounded, without distinct 

 lips or papillae. Lateral organs apparently absent. Stylet 

 with three knobs behind. Structure of oesophagus unknown. 

 IMale with a large, pointed process on either side at about the 

 level of the cloaca, curved posteriorly and a little inwards. 

 The two processes are united ventrally for about half their 

 length. Two slender, equal spicules present. No accessory 

 piece. Female unknown. (Description based on a single 

 male specimen). 



Hab. Soil. 



Genotype : E. termissima de Man, 1921. 



de Man, 1921, Capit. Zool., i, 35. 



Appendix to Angtjillulinidae. 



We place here two forms which, owing to their possession 

 of a buccal stylet, seem to have some relation to this family, 

 but which are probably considerably modified as the result of 

 their peculiar parasitic habits. 



a. Myenchus Schuberg & Schroder, 1904. 



Head truncate. Lips indistinct. At about the anterior 

 fifth of the body there is a ventral sucker-like organ. Buccal 

 cavity narrow, containing a " stylet," which is not knobbed 

 behind. Oesophagus short, consisting of two spindle-shaped 

 swellings. Tail tapering in both sexes, with three terminal 

 processes. Male with two short and broad spicules, with 

 expanded roots. Apparently no accessory piece. Testis 

 single, anterior, outstretched. Vulva at about the posterior 

 fourth of the body. Female genital tubes paired, opposed ; 

 the posterior uterine branch vestigial and without ovary, the 

 anterior ovary outstretched. Eggs few and large. 



Hab. In the connective tissue and (larvae) in the muscle- 

 ceUs of a Leech (Nephelis). 



Genotype : M. bothryophortis Schuberg & Schroder, 1904. 



Schuberg & Schroder, 1904, Verh. Naturhist.-med. Ver., 

 Heidelberg, N.F. vii, 629; 1904, Zeitschr. f. wiss. Zool., 

 Ixxxvi, 509. 



b. Myoryctes Eberth, 1863. 



Very small worms. Cuticle smooth. Head very slightly 

 expanded. Mouth contains a stylet ending anteriorly in a 



