126 A nnals Entomological Society of A mcrica [Vol . I , 



f_g. frontal ganglion. 



fn. frontal nerve. 



g. ganglion of the mandibular nerves. 



gn. gustatory nerve. 



i. nerve connecting the frontal ganglion with the brain. 



I. labial nerve. 



lb. labium. 



Ig. lateral ganglion. 



-ynax. maxilla. 



md. mandibular nerve. 



m. n. median nerve. 



mnd. mandible. 



tn, p, q, s, ^i, z. nerves of the lateral sympathetic system. 



mx. maxillary nerve. 



MjC. first nerve of the connective. 



o. optic nerve. 



ocs. oesophagus. 



ph. pharynx. 



pn. pharyngeal nerve. 



•r. recurrent nerve. 



5. c. subcesophageal commissure. 



5, g. suboesophageal ganglion. * 



5. n. salivary nerve. 



St. stomogastric nerve. 



t. trachea in the labium. 



tv. It. transverse nerve. 



V. vagus ganglion. 



w. nerve of the suboesophageal ganglion. 



X. nerve of the brain. 



y. opening of the salivary ducts. 



Fig. 8. Section through an abdominal segment, showing the distribution of 

 the nerves. 



3, 4- branches of the lateral nerve. 

 a. adipose tissue. 

 ale. alimentary canal. 

 d. m. dorsal muscles. 

 G. abdominal ganglion. 

 g. gills. 

 /;. heart. 



/. m. lateral muscles. 

 It, n. nerves. 

 tr. trachea. 

 V. in. ventral muscles. 



v^m^. fibers of the ventral muscles passing over the nerves (compare 

 with Fig. 1, m,). 



Fig. 9. Lateral view of the larva showing the attachment of the intestinal 

 nerve. (Compare with Figs. 1 and 10). 



1-8. first to eighth abdominal ganglia. 



d. d. dorsal diaphragm. 



in. n. intestinal nerve. 



/. in. large intestine. 



n. nerve of the tenninal ganglion. 



oe. oesophagus. 



prl. proleg. 



p. V. prevent riculus. 



5. g. suboesophageal ganglion. 



.v. in. small intestine. 



sm. suspensory muscles of the alimentary canal. 



V. ventricle. 



V. d. ventral diaphragm. 



