PLATE 11 



EXPLANATION OF FIGURES 



Figures 23, 24, 24a are different views of a 7-J-mm. larva (R. eatesbiana), with 

 globular body and first intestinal spiral. The figures give almost completely in 

 one specimen the characters of the lymphatics and different subdivisions of the 

 system. In figure 23 the fully extended dorsal lymphatic has many processes, of 

 which a number connect segmentally with the lateral system. Tubular ducts have 

 appeared in place of the plexuses over the heart and elsewhere. In figure 24, the 

 left side of the same specimen, a special patency of the longitudinal channels 

 has caused the injection fluid to fill vessels not injected on the other side. The 

 temporal sinus and its connections with the lymph heart, and the ventral, lateral 

 and caudal lymphatics are thus much distended on this side. Figure 24a gives 

 the general characters of the specimen and the arrangement of the digestive 

 organ's. 



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