ABBREVIATIONS. 



cd. n. V. 



ventral nerve cord. 



In. V. 



ventral line. 



cl. corns. 



commissural cells of 



mb. ba. 



basement membrane. 





brain. 



n. a. 



nerve fibres anterior to 



eld. 



dorsal cell. 





brain. 



cl. gn. I , II., 



, etc. first, second, third, etc. 



nl.d. 



nucleus of dorsal cell. 





large ganglion cell of 



nl. gn. 



nucleus of large ganglion 





brain. 





cell. 



cl. in. i.-iv. 



intestinal cells I. to IV. 



nl. gn. i.- 



-V. nuclei of ganglion cells 



cl. mu. 



muscle cell of body wall. 





I. to V. of brain. 



cl. oe. 



oesophageal cell. 



n.l. 



lateral nerve of ventral 



cl. sns. 



sensory cell. 





nerve cord. 



corns, oe. 



dorsal (supra-oesopha- 



nil. 



nucleolus. 





geal) commissure of 



n. m. 



median nerve of ventral 





brain. 





nerve cord. 



cp'. 



corpuscle of body cavity 



n. n. 



nervous nuclei. 





fluid. 



oe. 



oesophagus. 



eta. 



cuticula. 



pd. cl. d. 



stalk of dorsal cell. 



e'th. pi't. 



peritoneal epithelium. 



pr'c. gn. 



process of ganglion cell. 



fb/. mu. 



contractile fibrillse of 



sac. d. 



dorsal sac. 





muscle cell. 



sp'z. 



spermatozoa. 



fbr. n. 



nervous fibrillae. 



St. pi'ph. 



peripheral layer of anal 



gn. an. 



anal ganglion. 



4 



ganglion. 



h'drrn. 



hypodermis. 



te. 



testis. 



in. 



intestine. 



va. df. 



vas deferens. 



In.d. 



dorsal line. 







