Ironus americanus - A diagram of the different parts of a human leg

Fig. 781. Ironus americanus. I, head and anterior portion of neck; II, head, lateral view "teeth" extruded; III, head, " teeth " withdrawn with second set formed in preparation for the next moult; IV, tail end of female. a, one of the three pharyngeal teeth, shown extruded; b, papilla; c, cephalic seta; d, amphid; e, pharynx; j, toothlet; g, toothlet; k, esophagus; i, lining of esophagus; j, nerve-ring; k, intestine; l, anus; m, caudal gland; n, terminus. (After Cobb.)