PLATE 2. 



Fig. 1. DOLABELLA AGASSIZI, Sp. nOV. 



Fig. 1. The central nervous system in dorsal view. The connective-tissue capsules and sheaths 

 of the gangUa and nerves have been dissected away, and are not represented in the drawing. The 

 cerebral gangUa are shown in the upper part of the Plate, their nerves being indicated on the right 

 side only by el, c2, etc., the homologous nerves of the left side being symmetrically located and 

 easily recognizable; c-6 con, the cerebro-buccal connectives passing to the buccal gangha (Plate 3, 

 fig. 3) ; c-p con, and c-j)l. con, the cerebro-pedal and cerebro-pleural connectives, joining the cerebral 

 to the pedal and pleural ganglia respectively, and sho^Ti on the lower half of the plate. Owing to 

 the great length of these connectives their full extent is not represented, the interruption being indi- 

 cated by the dotted portions. The pedal nerves are numbered serially in the order of their appearance 

 from the ganglia, from in front backward; pi. 1 and pi. 2, the first and second nerves from the pleural 

 gangUa; pl-par. c, the plem'o-parietal connective of the right side; pl-v. con, the pleuro- visceral con- 

 nective on the left. X 10. 



