668 



MR. B. F. CUMMIXGS OX LICK 



rest of the alimentary tract requires no detailed description, 

 except perhaps a reference to the swollen base of each Malpighian 

 tube. 



Nervous System (text-fig. 18). — The state of preservation forbade 

 any satisfactory dissection of the nervous system. The brain and 

 mfiin ganglia have been figured by Snodgrass for Eurymetopus 

 tcmrus (1, pi. xvi. fig. 7). From this, the central nervous system 

 differs in its general form. The supra-oesophageal ganglion is 



Text-fio^ure 19. 



Ibidcecus flaws. Male reproductive system and copniatovy apparatus. X 90. 



T. testis. TIJ. vas deferens. 5P. basal plate. ^. endomere. P. paramere. 

 Pen. penis. D. ductus. VS. vesicula seminalis. 



much broader and the bay in front less deep. The sub- 

 oesophageal is narrower ; the first thoracic ganglion is also 

 long and narrow and a little narrower in front than behind. 

 The second or mesothoracic ganglion is roughly triangular in 

 shape, the apex pointing forward. The metathoracic is the 

 largest of the three, and more or less circular in shape. Behind, 

 two extraordinarily large stomato-gastric nerves come off and 

 •supply the viscera. 



Male Reproductive System (text-fig. 19). — 'Testes: Relatively 



