Waite. — Antennal Glands. 



PLATE 6. 



(In Fig. 40 anterior is up, lateral to the right; in Figs. 50, 51, 60, dorsal is up ; 

 in Figs. 50, 60, anterior is to tlie right ; in Fig. 51 anterior is to the left.) 



Fig. 49. Dorsal face of a frontal section (the tenth of a series of eighteen) through 



the right antennal gland. X 128. 

 Fig. 50. Lateral face of a parasagittal section through right gland and duct in the 



third larva. X 128. 

 Fig. 51. Parasagittal section through the orifice connecting the lumina of endsac 



and ectodermic sac in the first larva. X 350. 

 Fig. 52. Cell from section of wall of endsac of the first larva in a region not adja- 

 cent to the ectodermic sac. X 900. 

 Fig. 53. Cells from section of wall of endsac in the first larva in a region adjacent 



to the ectodermic sac. X 900. 

 Fig. 54, Cells from section of dorso-lateral wall of ectodermic sac in first larva. 



X 900. 

 Fig. 55. Cells from section of ventral wall of ectodermic sac in first larva. X 900. 

 Fig. 56. Cells from section of dorso-median wall of ectodermic sac in first larva. 



X 900. 

 Fig. 57. Cells from section of dorsal wall of ectodermic sac in first larva, one sliow- 



ing mitotic figures. X 900. 

 Fig. 58. Cell from section of dorsal wall of ectodermic sac in first larva. X 1600. 

 Fig. 59. Blood corpuscle from blood lacunae of antennal gland in first larva. 



X 900. 

 Fig. 60. Longitudinal section of duct of the antennal gland in first larva. X 350. 



