Cobb — Nematodes, mostly Australian and Fijian. 55 



EXPLANATION OF PLATES. 



Plate i. 



MONONCHUS DIGITURUS. 



Fig. 1. Female worm. Fig. 2. Terminus of the tail. Fig. 3. Neck and head. Fig. 4. Tail. 



a, spinneret ; h, mouth-opening ; c, papillse ; d, pharynx ; e, two stibmedian teeth ; /, single dorsal 

 tooth ; g, nerve-ring ; h, oesophagus ; «, vulva ; j, auus ; k, intestine ; I, cardiac constriction. 



MONONCHUS GYMNOLAIMUS. 



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



a, papillse round the mouth ; h, papillae on the margin of the head ; c, rectum ; d, lateral organ ; e, 

 striae on wall of the pharynx ; /, muscles of the pharynx ; g, oesophagus ; h, caudal glands ; i, 

 dorsal tooth ; _;', oesophagus ; h, intestine ; I, vulva and vagina ; tn, ovum, ilexure in ovary ; n, 

 anus ; o, excretory pore (1) ; p, cardiac coUum ; g, oesophagus. 



MoNONCHUS MINCE. 



Fig. 1. Female worm. Fig. 2. Head of the same worm more highly magnified. Fig. 3. Neck and head. 

 Fig. 4. Tail. Fig. 5. Portion of body. 



o, papillse on the margin of the head ; h, papillae round the mouth ; c, dorsal tooth ; d, rasp-like teeth 

 on wall of the pharynx ; e, beginning of the oesophagus ; f, nerve-ring ; g, anus ; h, lateral 

 field ; i, vulva ; J, egg ; h, oesophagus. 



Rhabditis filiformis (?), 



Fig. 1. Female worm. Fig. 2. Head. Fig. 3. Head. Fig. 4. Portion of the body. 



a, pharynx ; h, beginning of the oesophagus ; c, oesophagus ; d, cardiac bulb ; e, flexure in ovary ; /, 

 blind end of ovary ; g, vulva ; A, blind end of ovary ; i, posterior end of pharynx ; j, anus ; 

 A, flexure in intestine ; I, egg. 



Plate ii. 



AULOLAIMUS EXILIS. 



Fig. 1. A female worm. Fig. 2. Head of the same worm. Fig. 3. Neck. Fig. 4. Cardiac region. 



a, lips ; 6, pharynx ; c, nerve-ring ; d, base of pharynx ; e, vulva ; /, anus ; g, oesophagus ; A, cardiac 

 bulb ; i, cardiac bulb ; _;, beginning of the intestine. 



