212 



Dr. H. A. Baylis on an 



in most specimens, widens suddenly behind their bases. 

 The narrow anterior lobes of the lips (fig. 1, a.) are sharply 

 notched on their inner surfaces, that of the dorsal lip being 

 thus divided into two equal portions. The notch of each 

 ventro-lateral lip, however, divides the lobe asymmetrically, 

 the portion ventral to the notch being larger than the latero- 

 dorsal portion. The anterior lobe of each lip carries a denti- 

 gerous ridge with very coarse, rather irregular teeth. The 

 basal portion of each lip bears two papilla3. Those of the 

 dorsal lip are lozenge-shaped, double papillae, while each 



Fig. 1. 



Anisahis physeteris^ female. The lips, viewed en face. 



a., anterior lobe, and d., basal portion, -of dorsal lip; e., excretory pore; 

 p.yp.., papillae. 



ventro-lateral lip has one papilla of this type towards its 

 ventral side and one very minute, sim})le papilla situated 

 more laterally and further forward. There is a pair of 

 cervical papillse, situated at a distance of about 1 mm. from 

 the anterior end. 



The muscular portion of the oesophagus measures about 

 6 mm. in length in the male and 7 mm. in the female. It 

 has a maximum thickness of a little over 1 mm. There is a 

 very short ventriculus or glandular portion of the oesophagus 



