PLATE 2 



1 Tarantula palmata. Neuromeres of the suboesophageal ganglion. X 60 

 Sagittal secton through median line of cephalothorax outlined from the photo- 

 graph showing 17 neuromeres. Anterior to the suboesophageal ganglion the 

 tissues are broken up on account of extraction of the chelicerae, which are too 

 hard to section. ART, artery, the branches from which run between the neuro- 

 meres; CH, chitin of external surface; CT, muscle and connective tissue indicated 

 by broken horizontal lines; A^^4, nerve to abdomen. 



Fig. 2. Photograph from which the drawing was outlined. 



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