BY T. HARVEY JOHNSTON AND M. J. BANCROFT. 43 



the intestine is separated by a space (fig. 7). The surface 

 of the parasite is marked by very numerous transverse 

 structures which are so low and closely arranged that they 

 are recognisable only under the oil immersion. Hence the 

 cuticle appears to be quite smooth. 



(>iA 



Text-figures 1-J: 



Text-figure 4 

 Text-ficure 5 



Text-fieures C-S 



Text-figure 6 

 Text-figure 7 

 Text-figure 8 



.a, anus ; a. 



fr. , granules ; i. 



— «.r. , nerve ring ; 



Stages in growth of Agamofilaria tabanicola ; drawn 



to same scale shown beside fig. 4. 

 Fully developed larva of A. tabanicola. 

 Very young stage of A. tabanicola, drawn to 



adjacent scale. 

 Highij'^ magnified views of fully developed larva 

 of A. tabanicola, drawn to scale adjacent to 

 fig. 8. 

 , . Head. 



Portion of middle of'bodv. 

 . . Tail. 



Explanation of Lettering. 

 . , anal operculum; b.w., body wail; cu., cuticle; 

 intestine; i.r., rudiment of intestine; m., mouth; 

 oe^., oesophagus; ^., papilla; ph., pharynx. 



