^42 



TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



XI.— EXPLANATION OF PLATES. 



Reference Lettering. 



a, b = Direction of the section in 



fig. 52. 

 ab. app. 1-4 = Abdominal appen- 



abd., *> s - and ,; = Abdominal seg- 



ments. 

 a. bib. = Last chamber of heart. 



a. gl. — Acinose gland of ventral 



tube, 

 al. m. = Alary muscle. 

 al. t. — Tendon of alary muscle. 

 an. — Antenna. 

 an' — Anus. 



at. n. = Antennal nerve. 

 b.c. = Blood corpuscles. 



b. cav. — Body cavity. 



b.m. — Basement membrane. 



c. = Inner layer of cuticle, 

 c. ' = Outer layer of cuticle. 

 car. = Cardo. 



cav. = Foramen leading into 



cavity of mandible. 

 ch. — Chromatin. 

 ck.' — Outer membrane of egg. 

 chb. = Common Chamber. 

 ch. b. — Chromatin body. 

 clu e. = Torn edge of outer egg 



membrane. 

 circ. m. = Circular muscle fibres 



of oesophagus. 

 elm. = Clypeo-labral rudiment. 

 clyp. — Clypeus. 

 c. m. = Circular muscle fibres of 



mid gut. 

 c. m. b. = Circular muscle bands. 

 c. m. j. — Union of circular 



muscle fibres. 



conn. = Para -oesophageal con- 

 nective. 



conn. h 2 - 3 = Connectives of ven- 

 tral nerve cord. 



c.p. = Central mass of protoplasm. 



c. t. ) = Connective tissue 



c '. t'. m'. i membrane. 



c. t. m. — Connective tissue coat 



of mid gut. 

 cut. = Cuticle. 



d. b. = Dark transverse band. 

 dep. = Cup -like depression. 

 deu' ceb. — Deutocerebron. 



dil. an. m. — Dilator muscles of 



anus. 

 dil. reel. m. = Dilator muscles 



of rectum. 

 div. — Median diverticulum of 



vagina. 

 drc. — Deutocerebrum. 

 d. s. | = Successive stages in 



d.' s.' - development of 



d. 2 s. 2 J spermatozoa. 



d. t. = Duct of the acinose gland. 

 dil. — Ductule of salivary gland. 

 ec. = Ectoderm. 

 em. mm. = Nematode embryo. 

 en. = Future endoderm cells. 

 cp. — Epithelium. 

 epcr. = Epi cranium. 

 epith. = Fore-gut epithehum. 

 cpith, th. — Epithelial thickening. 

 ex. g. = Excretory granules. 

 exc. or. = Fatty body. 

 gal. = Galea. 

 g.c. = Ganglion cells. 

 q ' c . ' * Germ cells. 



