Cobb — Nematodes, -mostly Australian and Fijian. 57 



Rhabditis monhystera. 



Fig. 1. Female worm. Fig. 2. Male worm. Fig. 3. Tail of a male. Fig. 4. Head. Fig. 5. Tail of a 

 female. Fig. 6. An egg with embryo. 



a, bliad end of ovary ; 6, egg ; c, vulva ; d, egg ; e, flexure in ovary ; /, anus ; ff, ductus ejaculatorius ; 

 h, spiculum ; i, anterior group, ribs of bursa ; j, median group, ribs of bursa ; k, posterior group, 

 ribs of bursa ; I, pharynx ; m, oesophagus ; n, median bulb ; o, nerve-ring ; p, excretory pore ; 

 q, cardiac bulb ; r, intestine ; s, flexure in testicle ; t, vas deferens ; u, papillae on lips ; v, 

 pharynx ; w, rectum ; x, lateral pores on tail of female ; y, embryo. 



Rhabditis pellioides. 



Fig. 1. A female worm. Fig. 2. Head. Fig. 3. Tail. Fig. 4. Small portion of the body. Fig. 5. ISTeck 

 and head. Fig. 6. Tail of a male. Fig. 7. Tail of a male. 



a, lips ; b, pharynx ; c, median bulb ; d, nerve-ring ; e, cardiac bulb ; /, pharynx ; g, papillae ; h, lip ; 

 i, anus ; _;, lateral wings ; k, flexure in ovary ; I, blind end of testicle ; m, ribs of bursa ; n, 

 spermatozoa ; o, bursa ; p, egg ; q, ribs of bursa ; r, ribs of bursa ; s, egg ; t, vulva ; u, anus ; v, 

 median bulb ; lu, ribs of bursa ; x, excretory poi'e ; y, ribs of bursa ; z, ribs of bursa. 



Plate iv. 



Tripyla minor. 



Fig. 1. Female worm. Fig. 2. Head of the same worm more highly magnified. Fig. 3. Tail of a female. 



Fig. 4. Tail of a female. Fig. 5. Tail of a female. Fig. 6. Front view of head. Fig. 7. Spinneret 



in the terminus of the tail. (Figs. 3, 4, 5 show difierence in form and amount of motion.) 



a, one of the papillae round the mouth ; b, one of the lateral setae ; c, one of the submedian setae ; d, 



supposed lateral organ ; e, anus ; /, spinneret opening ; g, anus ; h, anus ; i, nerve-ring ; _;, 



cardiac collum ; k, egg • I, vulva ; m, lateral seta ; n, one of the pairs of submedian setae ; o, 



anus; p, pharynx. 



Prismatolaimxjs intermedids. 



Fig. 1. Female worm. Fig. 2. Head of the same worm more highly magnified. Fig. 3. Cardiac region 

 showing structures (?) of unknown significance. Fig. 4. Portion of the female near the vulva. 

 Fig. 5. Anal region. Fig. 6. Tail. Fig. 7. Terminus of tail. Fig. 8. Portion of body drawn to 

 show striations and intestine. 



a, cephalic setae ; b, pharynx ; c, oesophagus ; d, ovum ; e, rectum ; /, vulva ; g, anus ; h, posterior end 

 of the oesophagus ; i, structures of unknown significance ; j, beginning of the intestine ; k, blind 

 end of ovary ; I, vulva ; m, terminus. 



DiPLOGASTER PARVUS and MINOR. 



Fig. 1. Female worm. Fig. 2. Neck and head of another worm. Fig. 3. Head of female shown in Fig. 1. 

 Fig. 4. Sid& view of body. Fig. 5. Anal region of a male. 



a, pharynx ; b, dorsal tooth ; c, lateral field ; d, median bulb ; e, lips ; /, dorsal tooth ; g, pharynx ; h, 

 cardiac bulb ; i, flexure of the ovary ; j, blind end of ovary ; k, vulva ; I, anus ; m, median 

 bulb ; n, nerve-ring ; o, cardiac bulb ; p, intestine ; q, male papilla ; r, inale jiapilla ; s, male 

 papilla ; t, male papilla ; u, male papilla ; v, left spiculum ; w, accessory piece. 



H 



