252 



DISCOVERY REPORTS 



B 



Fig. 25. Lineus corrugatus, Mcintosh. A series of diagrammatic half-sections at the level of the extreme 

 anterior end of the mouth. A, type (i) ; B, type (i) corresponding to B of Fig. 23 ; C, type (iii) ; D , type (i) corre- 

 sponding to D and E of Fig. 23; E, type (ii). cc, cerebral canal; co, cerebral organ; dg, dorsal ganglion; 

 In, lateral nerve ;pn, pharyngeal nerve; vg, ventral ganglion. 



