Key to Lettering on Plates

a, acrosome; b, lamella of Golgi apparatus; c, centriole; cr, cristae; e, lamella of Golgi apparatus (see text); ep, ergastoplasm (endoplasmic reticulum); f, flagellum of spermatozoon; g, Golgi apparatus dictyosome or acroblast; h, crater in chromosome; K, protoplasmic bridge to central nutrient mass; m, mitochondrion; n, nucleus; nx, nuclear fin; O, possible cap vesicles; p, pX, spindle fibre tubes; pn, post-nuclear or centriole adjunct material; r, granules in acrosome carrier; t, possible intra-nuclear tube; un, unknown vesicle, probably part of forming acrosome carrier; z, vesicles in Golgi field of spermatocyte probably pro-acrosomic.

Lettering: A, acrosome; C1, C2, acroblast (dictyosome) covers; CR, centriole; CH, chromosome; G, Golgi apparatus (dictyosome); H, centromere; K, attachment of spermatic cell generations to central nutritive mass; L, lamellae; M, mitochondrion; N, nucleus; P, spindle fibre tube; PA, proacrosomic region; S, membrane; ST, side tube; V, vacuole; VF, free vacuole between lamellae; VE, vacuole inside lamella.