150 



STRONGYLUS VENTRICOSUS, Eud. 



Plate XX. 



Fig. I. Male, natural size iudicated bjr line ami suull ri'j;iire of worm : a, head; 6, 



bursa aud spicula. 

 Fig. 2. Female, natural size iudicated by line and small figure of worm: a, head; 



/;, genital orifice. 

 Fig. 3. Head: a, mouth; hi, cliitinous cap surrounding it; c, icsopliagus. 

 Fig. 4. Portion of sliiu showing eight of the fourteen lines: a a, the two lateral 



lines: b h, the dor§al and veutral linos. The dots indicate depressions 



where the lougitudiiiM and th(! latitudinal lines cross. 

 Fig. .^). Cephalic end : a, head ; h, cesophagiis. 

 Fig. 0. Spiculum: a, its chitinous portion; h, the protractor muscle; c, the fringe 



edging the membranous portion ; d, the distal end covered by membrane. 

 Fig. 7. Female, natural size indicated by line: This female is more characteristic of 



the species than that of Fig. 2, but is not quite mature. 

 Fig. 8. Bursa with spicula. 

 Fig. 9. Bursa spread out: a, ventral cost;B ; h, veutro-lateral ; c, lateral, of which 



there seems to be an accessory branch ; d, dorsal-lateral; e, dorsal, which 



also has an accessory branch. 



