260 rith'frsity of California Publications. [ZOOLOGY 



LIST OF ABBREVIATIONS USED IN THE PLATES. 



con.m. constrictor muscle fibres. 



c.t.b. connective tissue bundles. 



c.t.l. connective tissue layer of gland walls. 



c.t. ---connective tissue in epidermis. 



e.w. cell walls. 



d. duct of gland. 



dil.m. dilator muscle fibres. 



el.f. elastic fibres. 



ep. epidermis. 



ep.m.c. cell containing musculature of duct. 



fl.c. funnel cell. 



i.e.l. inner layer of corium. 



l.d. lumen of duct. 



l.gl. lumen of gland. 



m.b. muscle bundles. 



m.e.l. middle layer of the corium. 



m.f. muscle fibres. 



m.gl. mucous gland. 



m.n. muscle nucleus. 



n.c. nerve cord. 



n.e. nerve endings. 



n.fl.c. nucleus of funnel cell. 



n.f. nerve fibre. 



nuc.m.c. nucleus of mucous cell. 



nuc.p.c. nucleus of poison cell. 



nue.eji.m.c. nucleus of muscle cell in epidermis. 



o.c.l. outer layer of corium. 



p.fl.e. processes of funnel cells. 



p.gl. poison glands. 



pig. pigment. 



prol.m.f. prolongations of muscles into epidermis. 



rep.c. replacement cell (and nucleus). 



rep.gl. replacement glands. 



sec. secretion. 



All the figures were drawn with the Abb6 camera lucida. 



